Lawrence Rinsky

All Publications

• 3D CT modeling demonstrates the anatomic feasibility of S1AI screw trajectory for spinopelvic fixation in neuromuscular scoliosis. Spine deformity Bryson, X. M., Pham, N. S., Hollyer, I., Hu, S., Rinsky, L. A., Vorhies, J. S. 2024

  Abstract

  In patients with neuromuscular scoliosis undergoing posterior spinal fusion, the S2 alar iliac (S2AI) screw trajectory is a safe and effective method of lumbopelvic fixation but can lead to implant prominence. Here we use 3D CT modeling to demonstrate the anatomic feasibility of the S1 alar iliac screw (S1AI) compared to the S2AI trajectory in patients with neuromuscular scoliosis.This retrospective study used CT scans of 14 patients with spinal deformity to create 3D spinal reconstructions and model the insertional anatomy, max length, screw diameter, and potential for implant prominence between 28 S2AI and 28 S1AI screw trajectories.Patients had a mean age of 14.42 (range 8-21), coronal cobb angle of 85° (range 54-141), and pelvic obliquity of 28° (range 4-51). The maximum length and diameter of both screw trajectories were similar. S1AI screws were, on average, 6.3 ± 5 mm less prominent than S2AI screws relative to the iliac crests. S2AI screws were feasible in all patients, while in two patients, posterior elements of the lumbar spine would interfere with S1AI screw insertion.In this cohort of patients with neuromuscular scoliosis, we demonstrate that the S1AI trajectory offers comparable screw length and diameter to an S2AI screw with less implant prominence. An S1AI screw, however, may not be feasible in some patients due to interference from the posterior elements of the lumbar spine.

  View details for DOI 10.1007/s43390-024-00840-z

  View details for PubMedID 38733488

  View details for PubMedCentralID 8505341

• Temporary Flexible Rods for Correction of Severe Pediatric Spinal Deformity ORTHOPEDICS Kwong, J. W., Tileston, K. R., Kaur, J., Segovia, N. A., Imrie, M. N., Rinsky, L. A., Vorhies, J. S. 2023; 46 (4): 234-+

  Abstract

  Surgical correction of large, rigid scoliotic and kyphotic curves carries an increased risk of perioperative complications, such as neurological injury and excessive blood loss, compared with correction of less severe curves. Titanium temporary flexible rods (TFRs), designed for pediatric long bone fracture fixation, may be helpful as adjuncts to achieve gradual, stepwise intraoperative correction of severe pediatric spinal deformities. A retrospective review was conducted of spinal fusion cases for pediatric scoliosis or kyphosis at our institution that used TFRs as a correction technique from 2007 to 2019. Patients underwent posterior spinal fusion with predominantly pedicle screw instrumentation. Intraoperatively, a non-contoured titanium elastic nail was temporarily positioned in the screws unilaterally to achieve partial correction while the contralateral side was instrumented. Then, the TFR was removed and replaced with a permanent rod. Thirty-four patients with severe spinal deformities underwent posterior spinal fusion. Seventeen had scoliosis (mean major Cobb angle, 89.3°) and 17 had kyphosis (mean T5-T12 kyphosis, 73.8°). Idiopathic deformity was the most common etiology; neuromuscular, syndromic, and postsurgical causes contributed to the remainder of cases. All patients had Ponte osteotomies. Four patients (11.8%) had neuromonitoring alerts, 1 of which was related to insertion of the TFR; all were reversible. For patients with scoliosis, the mean postoperative Cobb angle measured 40.2° (53.6% correction). For patients with kyphosis, the mean postoperative T5-T12 angle measured 43.3° (30.4° of correction). TFRs appear to be helpful adjuncts for correction of severe pediatric spinal deformities, facilitating gradual intraoperative correction in a single-stage operation. Neuromonitoring alerts are common but reversible. [Orthopedics. 2023;46(4):234-241.].

  View details for DOI 10.3928/01477447-20230207-03

  View details for Web of Science ID 001036949800013

  View details for PubMedID 36779740

• Neurosurgical management of vertebral lesions in pediatric chronic recurrent multifocal osteomyelitis: patient series. Journal of neurosurgery. Case lessons Hug, N. F., Purger, D. A., Li, D., Rinsky, L., Hong, D. S. 2023; 5 (4)

  Abstract

  BACKGROUND: Chronic recurrent multifocal osteomyelitis (CRMO) is a rare pediatric autoinflammatory disorder involving 2 or more inflammatory bone lesions separated in time and space associated with pathological vertebral fractures. There are no current guidelines for the role of pediatric spine surgeons in the management of this condition. The authors demonstrate the importance of close and early involvement of neurosurgeons in caring for patients with CRMO with vertebral involvement.OBSERVATIONS: Fifty-six pediatric patients with clinical and radiographic evidence of CRMO were identified and clinical, radiographic, laboratory, and histopathological data were reviewed. All were evaluated via Jansson and Bristol CRMO diagnostic criteria. Ten had radiographic evidence of vertebral involvement (17.9%). Nine of these had multifocal disease. Five patients had multiple vertebrae affected. Six patients were evaluated for possible surgical intervention and one required intervention due to vertebra plana leading to a progressive kyphotic deformity and significant spinal canal stenosis.LESSONS: In conjunction with management by the primary pediatric rheumatology team using nonsteroidal anti-inflammatory drugs, disease-modifying anti-rheumatic drugs, immunotherapies, and bisphosphonates, given the risk of pathological fractures and potential resulting long-term neurological deficits, the authors recommend close monitoring and management by pediatric spine surgeons for any patient with CRMO with vertebral lesions.

  View details for DOI 10.3171/CASE22179

  View details for PubMedID 36692064

• Curve Characteristics and Surgical Outcomes in Scoliosis Associated With Childhood Sternotomy or Thoracotomy. Journal of pediatric orthopedics Langner, J. L., Ezeonu, T., Shafau, A., Javier, N., Bryson, X., Kaur, J., Poppino, K., Shivers, C., Chilakapati, S., Hall, K. E., Imrie, M. N., Rinsky, L., Riccio, A. I., Vorhies, J. S. 2022

  Abstract

  BACKGROUND: The purpose of this study is to describe curve characteristics and postoperative outcomes in patients undergoing spinal fusion (SF) to treat thoracogenic scoliosis related to sternotomy and/or thoracotomy as a growing child.METHODS: A retrospective review of electronic medical records of all patients with Post-Chest Incision scoliosis treated with SF was performed at 2 tertiary care pediatric institutions over a 19-year period. Curve characteristics, inpatient, and outpatient postoperative outcomes are reported.RESULTS: Thirty-nine patients (62% female) were identified. Eighteen had sternotomy alone, 14 had thoracotomy alone, and 7 had both. Mean age at the time of first chest wall surgery was 2.5 years (range: 1.0d to 14.2y). Eighty-five percent of patients had a main thoracic curve (mean major curve angle 72 degrees, range: 40 to 116 degrees) and 15% had a main lumbar curve (mean major curve angle 76 degrees, range: 59 to 83 degrees). Mean thoracic kyphosis was 40 degrees (range: 4 to 84 degrees). Mean age at the time of SF was 14 years (range: 8.2 to 19.9y). Thirty-six patients had posterior fusions and 3 had combined anterior/posterior. Mean coronal curve correction measured at the first postoperative encounter was 53% (range: 9% to 78%). There were 5 (13%) neuromonitoring alerts and 2 (5%) patients with transient neurological deficits. Mean length of hospital stay was 9±13 days. At an average follow-up time of 3.1±2.4 years, 17 complications (10 medical and 7 surgical) were noted in 9 patients for an overall complication rate of 23%. There was 1 spinal reoperation in the cohort. 2/17 (12%) complications were Clavien-Dindo-Sink class III and 5/17 (29%) were class IV.CONCLUSION: Kyphotic thoracic curves predominate in patients with Post-Chest Incision scoliosis undergoing SF. Although good coronal and sagittal plane deformity can be expected after a fusion procedure, postoperative complications are not uncommon in medically complex patients, often necessitating longer postoperative stays.LEVEL OF EVIDENCE: Level III.

  View details for DOI 10.1097/BPO.0000000000002229

  View details for PubMedID 36017932

• Innovative technique for early-onset scoliosis casting using Jackson table. Spine deformity Montgomery, B. K., Tileston, K., Kaur, J., Kym, D., Segovia, N. A., Imrie, M., Policy, J., Rinsky, L., Vorhies, J. 2022

  Abstract

  PURPOSE: Early-onset scoliosis (EOS) can have harmful effects on pulmonary function. Serial elongation, derotation, and flexion (EDF) casting can cure EOS or delay surgical intervention. Most described casting techniques call for specialized tables, which are not available at many institutions. We describe an innovative technique for EDF casting utilizing a modified Jackson table (MJ) and compare results to a Risser frame (RF).METHODS: All patients who underwent EDF casting at our institution between January 2015 and January 2019 were identified and retrospectively reviewed. Patients were stratified by type of table used and clinical and radiographic outcomes were compared. Standard descriptive statistics were calculated.RESULTS: We identified 25 patients who underwent 77 casting events, 11 on an MJ table and 14 on a RF. Mean follow-up was 32months (range 11-61months). 28% of patients had idiopathic scoliosis. There was no significant difference in age at initiation of casting (P=0.3), initial Cobb angle (equivalence, P=0.009), or rate of idiopathic scoliosis between the MJ and RF groups. There was no significant difference in initial coronal Cobb angle percent correction (equivalence, P=0.045) or percent correction at 1-year follow-up (equivalence, P=0.010) between the two groups. There was no difference in cast related complications. There was a significant difference in surgical time, with the MJ group 11min shorter than the RF (P=0.005).CONCLUSION: The MJ table is a safe and effective alternative for applying EDF casts under traction without the need for a specialized table.LEVEL OF EVIDENCE: III.

  View details for DOI 10.1007/s43390-022-00526-4

  View details for PubMedID 35776363

• Does the location of short-arm cast univalve effect pressure of the three-point mould? Journal of children's orthopaedics Montgomery, B. K., Perrone, K. H., Yang, S., Segovia, N. A., Rinsky, L., Pugh, C. M., Frick, S. L. 2020; 14 (3): 236–40

  Abstract

  Purpose: Forearm and distal radius fractures are among the most common fractures in children. Many fractures are definitively treated with closed reduction and casting, however, the risk for re-displacement is high (7% to 39%). Proper cast application and the three-point moulding technique are modifiable factors that improve the ability of a cast to maintain the fracture reduction. Many providers univalve the cast to accommodate swelling. This study describes how the location of the univalve cut impacts the pressure at three-point mould sites for a typical dorsally displaced distal radius fracture.Methods: We placed nine force-sensing resistors on an arm model to collect pressure data at the three-point mould sites. Sensory inputs were sampled at 15 Hz. Cast padding and a three-point moulded short arm fibreglass cast was applied. The cast was then univalved on the dorsal, volar, radial or ulnar aspect. Pressure recordings were obtained throughout the procedure.Results: A total of 24 casts were analyzed. Casts univalved in the sagittal plane (dorsal or volar surface) retained up to 16% more pressure across the three moulding sites compared with casts univalved in the coronal plane (radial or ulnar border).Conclusion: Maintaining pressure at the three-point mould prevents loss of reduction at the fracture site. This study shows that univalving the cast dorsally or volarly results in less pressure loss at moulding sites. This should improve the chances of maintaining fracture reductions when compared with radial or ulnar cuts in the cast. Sagittal plane univalving of forearm casts is recommended.

  View details for DOI 10.1302/1863-2548.14.200034

  View details for PubMedID 32582392

• Day of the Week of Surgery Affects Time to Discharge for Patients With Adolescent Idiopathic Scoliosis ORTHOPEDICS Tileston, K. R., Uzosike, M., Segovia, N., Rinsky, L. A., Imrie, M. N. 2020; 43 (1): 8–12

  Abstract

  Unnecessary delays in discharge are extraordinarily common in the current US health care system. These delays are even more protracted for patients undergoing orthopedic procedures. A traditional hospital staffing model is heavily weighted toward increased resources on weekdays and minimal coverage on the weekend. This study examined the effect of this traditional staffing model on time to discharge for patients undergoing posterior spinal instrumentation and fusion for adolescent idiopathic scoliosis. Patients undergoing surgery later in the week had a significantly longer hospital stay compared with patients undergoing surgery early in the week (5.5 days vs 4.9 days, respectively; P=.003). This discrepancy resulted in a mean cost increase of $7749.50 for patients undergoing surgery later in the week. A subsequent quality, safety, value initiative (QSVI) was undertaken to balance physical therapy resources alone. Following the QSVI, patients undergoing surgery later in the week had a decreased mean length of stay of 3.78 days (P=.002). Patients undergoing fusion early in the week also had a decreased mean length of stay of 3.66 days (P<.001). There was no longer a significant difference in length of stay between the "early" and the "late" groups (P=.84). This study demonstrates that simply having surgery later in the week in a hospital with a traditional staffing model adversely affects the timing of discharge, resulting in a significantly longer and more costly hospital course. By increasing physical therapy availability on the weekend, the length of stay and the cost of hospitalization decrease precipitously for these patients. [Orthopedics. 2020; 43(1);8-12.].

  View details for DOI 10.3928/01477447-20191001-06

  View details for Web of Science ID 000508434100012

  View details for PubMedID 31587077

• Complete Atlantoaxial Dislocation After Odontoid Synchondrosis Fracture: A 2-Year Follow-up Study: A Case Report. JBJS case connector Karamian, B. A., Campbell, S. T., Rinsky, L. A. 2019

  Abstract

  Spine injuries are rare in children, but when they do occur, the synchondrosis of C2 may be involved. A 5-year-old boy presented to our clinic complaining of neck pain for 6 weeks, which started after wrestling with peers. He had slight upper extremity weakness, clonus, and diminished reflexes. Imaging, including computed tomography and magnetic resonance imaging scans, showed a fracture dislocation through the synchondrosis of the odontoid. The patient was initially treated with admission to the hospital, awake halo placement, and gradual traction over a few days. Subsequently, he was taken for transoral reduction and posterior instrumented fusion of C1-C3 using a combination of sublaminar suture, screws, and rods. Most recently, he was doing well over 2 years later, with no residual neurologic symptoms.The case presented demonstrates one option for an otherwise nonreducible odontoid synchondrosis fracture with complete atlantoaxial dislocation: transoral reduction and open posterior instrumentation. This proved to be a practical technique and provided a good clinical result in this case. These injuries are rare, but when they do occur, the examination can be surprisingly subtle given the severity of the injury. Plain films should be scrutinized carefully and advanced imaging obtained when necessary to confirm the diagnosis.

  View details for DOI 10.2106/JBJS.CC.18.00327

  View details for PubMedID 31188795

• Treatment in a Nonpediatric Hospital Is a Risk Factor for Open Reduction of Pediatric Supracondylar Humerus Fractures: A Population-Based Study. Journal of orthopaedic trauma Vorhies, J. S., Uzosike, O. B., Imrie, M. N., Rinsky, L. n., Hoffinger, S. n. 2019; 33 (9): e331–e338

  Abstract

  To describe the distribution of open versus closed treatment and its relationship with the location of care in pediatric specialty versus general hospitals.Patient data were extracted from the Healthcare Cost and Utilization Project's Kid's Inpatient Database for the years 2000-2012. ICD9-CM diagnosis and procedure codes were used to identify open versus closed treatment of closed supracondylar humerus fractures in children younger than 12 years. A multilevel logistic regression model to control for confounders and identify drivers of open treatment was used.An estimated 40,706 inpatient surgical fixation procedures met our inclusion criteria. Overall rate of open treatment was 13.65%. Fractures were less likely to be treated open at pediatric hospitals versus general hospitals 7.61% versus 16.13% (P < 0.0001). Over the study period, rates of open treatment have fallen at nonpediatric hospitals from 20.21% in 2000 to 17.42% in 2012 (P < 0.001) but have remained stable at pediatric hospitals: 7.8% in 2000 and 8.62% in 2012 (P = 0.4369). Mean hospital length of stay was higher for patients who had open treatment 1.63 versus 1.20 days (P < 0.0001), and mean hospital charges were higher for patients who had open treatment $21,465 versus $15,026 (P < 0.0001). After controlling for time trends as well as demographic and hospital characteristics with a logistic regression model, treatment at a nonpediatric hospital was the single most significant predictor of open treatment for an isolated closed supracondylar humerus fractures with an odds ratio of 1.96 (95% confidence interval 1.56-2.46; P < 0.001).In this comprehensive population-based study of risk factors for open treatment of supracondylar humerus fractures in the United States, we identified differences in practice patterns by hospital type. Pediatric supracondylar fractures of the elbow have almost twice the odds of open treatment at nonpediatric hospitals.Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

  View details for DOI 10.1097/BOT.0000000000001502

  View details for PubMedID 31188255

• Endoscopic-assisted epiphysiodesis: technique and 20-year experience. Journal of pediatric orthopedics. Part B Ledesma, J. B., Wang, T., Desmond, E., Imrie, M., Gamble, J. G., Rinsky, L. A. 2016; 25 (1): 24-30

  Abstract

  The aim of the study was to describe the endoscopic-assisted epiphysiodesis technique and review our 20-year experience with it. A retrospective review of 44 patients who underwent proximal tibia and/or distal femur endoscopic-assisted epiphysiodesis was carried out. Only patients who had preoperative and postoperative scanograms with clinical follow-up of at least 6 months were included. The mean length of follow-up was 36.8 months. All patients had radiographic evidence of physeal fusion within 6-12 months from the index procedure. No patient required revision surgery. Endoscopic-assisted epiphysiodesis is safe, effective, and achieves predictable physeal fusion. Advantages over current techniques include reduced radiation exposure and lack of requirement for hardware placement.

  View details for DOI 10.1097/BPB.0000000000000230

  View details for PubMedID 26462167

• Emergency surgical treatment of an ulcerative and hemorrhagic congenital/infantile fibrosarcoma of the lower leg: case report and literature review JOURNAL OF PEDIATRIC ORTHOPAEDICS-PART B Kraneburg, U. M., Rinsky, L. A., Chisholm, K. M., Khosla, R. K. 2013; 22 (3): 228-232

  Abstract

  Fibrosarcomas are rare malignant soft-tissue tumors occurring mostly in infants younger than 1 year of age. Fibrosarcomas can ulcerate and cause various complications, which could threaten a fetus in utero or a child in the early neonatal period. We report a unique case of congenital infantile fibrosarcoma of the lower leg, its treatment and pathology. The large expansive and destructive lesion was not appreciated on routine prenatal ultrasound exams at 20 and 33 weeks gestation. The newborn required immediate emergency surgical intervention after delivery to prevent death by hemorrhagic shock. Initial debulking of the tumor was performed and hemostasis was attained on the day of birth. The child was resuscitated and definitive treatment of the leg was deferred until a pathologic diagnosis was obtained. Given the extent of the fibrosarcoma, the lower leg was not salvageable and the patient received a through-the-knee amputation in the neonatal period. The patient is free of disease at 2 years of age.

  View details for DOI 10.1097/BPB.0b013e3283536908

  View details for Web of Science ID 000316801200010

  View details for PubMedID 22568962

• Kyphectomy in the treatment of patients with myelomeningocele SPINE JOURNAL Samagh, S. P., Cheng, I., Elzik, M., Kondrashov, D. G., Rinsky, L. A. 2011; 11 (3): E5-E11

  Abstract

  Myelomeningocele kyphosis is a complex disorder that usually requires surgical intervention. Many complications can occur as a result of this disorder and its treatment, but only surgical correction offers the possibility of restoring spinal alignment.The purpose of this retrospective study was to summarize the surgical results, complications, and short-term and midterm outcomes for surgical correction of severe kyphosis using a consistent surgical technique.This was a retrospective review of our database of pediatric patients with myelomeningocele and lumbar kyphosis who underwent kyphectomy with the use of the Warner and Fackler technique.Eleven pediatric kyphectomy cases performed by a single surgeon from 1984 to 2009 were reviewed.Outcome measures include imaging, kyphotic angle measurement, and physical examination.Patients underwent the Warner and Fackler technique of posterior-only kyphectomy and bayonet-shaped anterior sacral fixation.The mean extent of kyphosis was 115.6° (range, 77-176°) preoperatively with a correction to 13.0° (range, 0-32°) postoperatively, and a reduction with an average of 102.6° (range, 65-160°), for an 88.7% correction. On an average, 2.0 (range, 1-6) vertebrae were resected. Immediately postoperatively and at follow-up, with an average of 67.2 months (range, 8-222 months), the average kyphosis angle was 13.0° (range, 0-32°). All patients undergoing the procedure were unable to lie supine preoperatively. All patients postoperatively could lie in the supine position. The functional outcome in patients and caretakers was rated very favorably because all patients and caretakers who provided feedback (9 of 11) reported that they were satisfied with the procedure and would undergo the procedure again if given the choice.This technique has become the most effective surgical reconstruction in myelomeningocele kyphosis. Although significant complications can occur during and after the procedure, most patients had satisfactory postoperative outcomes and restoration of sagittal balance with high patient and parent satisfaction.

  View details for DOI 10.1016/j.spinee.2011.01.020

  View details for Web of Science ID 000288013200002

  View details for PubMedID 21377598

• Quantifying scoliosis: we are still not there SPINE JOURNAL Rinsky, L. A. 2010; 10 (9): 813-814

  Abstract

  COMMENTARY ON: Tanure MC, Pinheiro AP, Oliveira AS. Reliability assessment of Cobb angle measurements using manual and digital methods. Spine J 2010:10:769-774 (in this issue).

  View details for DOI 10.1016/j.spinee.2010.06.021

  View details for Web of Science ID 000281744200010

  View details for PubMedID 20797652

• Long-term follow-up of the surgical management of neuropathic arthropathy of the spine. spine journal Haus, B. M., Hsu, A. R., Yim, E. S., Meter, J. J., Rinsky, L. A. 2010; 10 (6): e6-e16

  Abstract

  No studies have discussed the long-term surgical management and outcomes of Charcot arthropathy of the spine. This case series presents nine patients treated over 30 years. The study hypothesis was that surgery would reduce instability, pain, recurrence, and the need for revision surgery in the long-term, given previous study findings of successful fusion of Charcot spine in the short-term.To evaluate the long-term outcomes of surgery for Charcot spine.Retrospective case series. Cases took place at Stanford University Medical Center and Santa Clara Valley Medical Center.All patients had either complete paraplegia or dense paraparesis with both major motor and sensory deficits. Seven patients developed Charcot spine after spinal instrumentation for trauma, one after scoliosis repair for meningomyelocele, and one after spinal instrumentation for neuromuscular scoliosis caused by birth injury resulting in C6-C7 quadraplegia. Average time between initial instrumentation and development of Charcot spine was 7.6 years. Two patients underwent posterior fusion alone, six had anterior-posterior fusion, and one was managed with thoracolumbar orthosis.Average follow-up was 14.3 years. Revisions were necessary in 75% (6 of 8) of patients for complications including nonunion, new Charcot joints, recurrent hardware failure, and osteomyelitis. Achieving fusion often required multiple operations, and there were no deaths or neurologic complications.Long-term follow-up showed a high rate of revision surgery. Solid fusions often resulted in late breakdown or new junctional Charcot arthropathies. Patients initially fused to the lumbar spine instead of the sacrum or pelvis had a higher rate of developing another Charcot joint. Fusion was often difficult with persistent nonunions and functional deficits because of decreased mobility. We recommend that Charcot spine well tolerated without skin, seating problems, or dysreflexia should be cautiously observed with conservative management. For surgical care, we recommend three-column stabilization with either combined anterior-posterior or all posterior approaches with anterior support to obtain and secure greater long-term stability.

  View details for DOI 10.1016/j.spinee.2010.03.030

  View details for PubMedID 20494808

• Dynamic skeletal traction spica casts for paediatric femoral fractures in a resource-limited setting INTERNATIONAL ORTHOPAEDICS Hsu, A. R., Diaz, H. M., Penaranda, N. R., Cui, H. D., Evangelista, R. H., Rinsky, L., Gracilla, R. V. 2009; 33 (3): 765-771

  Abstract

  The objective of this study was to compare elastic intramedullary nailing (EIN) with dynamic skeletal traction spica casting (DSTSC) in terms of postoperative radiographic angulations, length of hospital stay, and cost in a resource-limited setting. We prospectively studied 51 children, five to twelve years of age, with femoral fractures treated with either EIN (n = 26) or DSTSC (n = 25). Children treated with EIN had significantly longer hospital stays (17 +/- 8.0 days) than those treated with DSTSC (6.0 +/- 2.5 days). Financial constraints in acquiring supplies caused a significant increase in time from admission to surgery (EIN 9.5 +/- 2.3 days; DSTSC 1.1 +/- 0.3 days), and cost was about 400% higher for EIN compared with DSTSC. At twelve weeks follow-up, all patients in both groups had acceptable radiographic angulations. In resource-limited healthcare settings, DSTSC is an effective alternative to EIN with comparable post-op radiographic angulations, decreased hospital stays, and lower cost.

  View details for DOI 10.1007/s00264-008-0621-0

  View details for Web of Science ID 000267041000029

  View details for PubMedID 18654778

  View details for PubMedCentralID PMC2903093

• Magnetic resonance imaging-guided closed reduction treatment for developmental dysplasia of the hip SINGAPORE MEDICAL JOURNAL Vandevenne, J. E., Lincoln, T., Pauly, B. K., Rinsky, L., Lang, P. K. 2009; 50 (4): 407-411

  Abstract

  This study aimed to describe the radiological aspects and procedural steps of magnetic resonance (MR) imaging-guided closed reduction for the treatment of developmental dysplasia of the hip (DDH).Infants were positioned on a custom-made hip spica table attached to a vertically open double doughnut-shaped MR imaging unit (GE Signa SP, 0.5T) affording access to one orthopaedic surgeon and one radiologist. Standard MR imaging sequences and rapid dynamic MR imaging sequences, including fast spin-echo, fast gradient-echo and a fluoroscopic echo-planar sequence, were available. Procedural steps were described and illustrated as a guide for the radiologist actively collaborating with the orthopaedic surgeon.Five separate procedural steps were defined, describing the imaging action and the radiologist's focus related to the clinical action. These procedural steps included patient positioning, static imaging to evaluate hip congruency and factors impeding reduction, dynamic stress testing and reducing the hip while using dynamic motion MR imaging sequences to visualise reduction or dislocation, cast application with intermittent imaging confirmation of the femoral head position, and postprocedural static imaging.The role of the radiologist was well-defined during each procedural step of the MR imaging-guided closed reduction focusing on the use of specific sequences and image interpretation. Knowledge of these procedural steps may be helpful for efficient collaboration with the orthopaedic surgeon and successful MR imaging-guided treatment of DDH.

  View details for Web of Science ID 000267053500014

  View details for PubMedID 19421687

• Dynamic magnetic resonance guided treatment of developmental dysplasia of the hip JOURNAL OF PEDIATRIC ORTHOPAEDICS-PART B Lincoln, T. L., Vandevenne, J. E., Rinsky, L. A., Butts, K., Lang, P. 2002; 11 (4): 279-283

  Abstract

  This study demonstrates the feasibility and advantages of near real-time, multiplanar, dynamic magnetic resonance image-assisted treatment of patients with developmental dysplasia of the hip. Pathoanatomy and dynamic blocks to reduction are visualized with anatomic clarity not otherwise possible. Continuous imaging allows accurate assessment and maintenance of optimum positioning throughout the casting procedure. Patient charges for this new technique are less than standard methods of treatment, and the child receives no ionizing radiation.

  View details for Web of Science ID 000178875700002

  View details for PubMedID 12370576

• Personal experiences with overseas volunteerism CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Rinsky, L. 2002: 89-97

  Abstract

  Orthopaedic surgeons often are unaware of the many opportunities and rewards of practicing and teaching as an overseas volunteer in a developing country. Opportunities include participating as a member of an American team under the auspices of groups such as Operation Rainbow; or, one can go alone and practice just with host country personnel through organizations such as Orthopaedics Overseas. Typically, the group missions are short-term assignments of 1 to 2 weeks and are more oriented toward doing surgery. The solo visits typically are 1 month or more and aimed more at teaching. The visits are as rewarding and educational to the visiting volunteer as they are to the host country. The volunteer must be open minded and willing to adapt frequently; he or she will be impressed by the ingenuity and resourcefulness of the host orthopaedists who generally work hard with limited equipment and basic supplies. In general, patients are appreciative and rather stoic. Surgeons from the host country also are grateful and eager to learn and share knowledge.

  View details for Web of Science ID 000174262700016

  View details for PubMedID 11859229

• Electromyographic test to differentiate mild diplegic cerebral palsy and idiopathic toe-walking JOURNAL OF PEDIATRIC ORTHOPAEDICS Policy, J. F., Torburn, L., Rinsky, L. A., Rose, J. 2001; 21 (6): 784-789

  Abstract

  The purpose of this study was to determine whether children with mild spastic diplegic cerebral palsy (CP) could be differentiated from those with idiopathic toe-walking (ITW) based on an obligatory coactivation during voluntary contraction of the quadriceps or gastrocnemius. Twenty-four subjects participated in this study, eight children with mild spastic diplegia CP, eight with ITW, and eight age-matched controls. Measurements included passive range of motion and surface electromyographic recordings of the lateral quadriceps and lateral gastrocnemius. Electromyographic recordings were obtained during resisted knee extension with knee flexed 30 degrees, isometric quadriceps contraction with knee extended (quad set), active plantarflexion, and during gait. The range-of-motion values were not different between the CP and ITW subjects, with the exception of the popliteal angle, which was greater in subjects with CP, with an overlap in values. Gait electromyography showed premature firing of gastrocnemius in swing in both groups of subjects compared with controls. During resisted knee extension and quad set, the mean duration of gastrocnemius coactivation in subjects with CP was high: 86% and 86% compared with 20% and 35% for the subjects with ITW and 0.4% and 3% for controls, respectively. Voluntary plantarflexion did not consistently elicit coactivation of the quadriceps. The results suggest that electromyographic testing of resisted knee extension and quad set to identify gastrocnemius coactivation can help differentiate patients with mild CP from those with ITW.

  View details for Web of Science ID 000171936500016

  View details for PubMedID 11675555

• Electromyographic differentiation of diplegic cerebral palsy from idiopathic toe walking: Involuntary coactivation of the quadriceps and gastrocnemius JOURNAL OF PEDIATRIC ORTHOPAEDICS Rose, J., Martin, J. G., Torburn, L., Rinsky, L. A., Gamble, J. G. 1999; 19 (5): 677-682

  Abstract

  Clinical differentiation of patients with mild diplegic cerebral palsy (CP) and idiopathic toe walking (ITW) can be difficult. However, an involuntary extensor pattern may be a distinguishing sign. The purpose of this study was to determine if selected gait parameters or patterns of electromyogram (EMG) timing of quadriceps, gastrocnemius, and tibialis anterior during knee extension while sitting can distinguish between these patients. The hypothesis was that EMG testing for selective control of the quadriceps and gastrocnemius could differentiate patients with diplegic CP from normal controls and from patients with ITW. We evaluated 10 control, eight CP, and eight ITW subjects. Measurements included walking speed, energy expenditure index (EEI), ankle position during stance, and EMG of the quadriceps, gastrocnemius, and tibialis anterior during gait and during knee extension while sitting. Dynamic EMG timing during gait showed significant differences in the mean onset of the gastrocnemius between subjects with CP and ITW, but there was considerable overlap. More consistent differences were found during active and active-resisted knee extension while sitting. Mean values for gastrocnemius EMG timing recorded as a percentage of duration of quadriceps EMG while sitting were 0 and 0.4% for controls, 0 and 3.9% for ITW subjects, and 84.3% and 93.4% for CP subjects. Patterns of EMG timing of the quadriceps and gastrocnemius during knee extension while sitting can help to differentiate patients with mild diplegic CP from those with ITW.

  View details for Web of Science ID 000082295100025

  View details for PubMedID 10488875

• Analysis of radiographic measurements as prognostic indicators of treatment success in patients with developmental dysplasia of the hip JOURNAL OF PEDIATRIC ORTHOPAEDICS-PART B Rosen, A., Gamble, J. G., Vallier, H., Bloch, D., Smith, L., Rinsky, L. A. 1999; 8 (2): 118-121

  Abstract

  Measurements were taken and statistically analyzed from the initial radiographs, the 1-year follow-up radiographs, and the most recent radiographs of 81 patients (103 hips) to determine which measurements could predict the success of treatment. The average follow-up was 49 months (range, 12-139 months), and the average age of the patients at the last follow-up was 65 months (range, 15-190 months). Analysis of the data showed that the measurement with statistically significant predictive value was the Tonnis grade of dislocation determined from the initial radiograph. A single unit increase in the Tonnis grade was associated with a doubling of the odds of failure in patients treated with a Pavlik harness (P < 0.04, odds ratio = 2.2) or a closed reduction (odds ratio = 2.0).

  View details for Web of Science ID 000081887100011

  View details for PubMedID 10218173

• Untitled - Reply JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Lee, J. H., Gamble, J. G., Rinsky, L. A., Moore, R. E. 1996; 78A (11): 1785-1785

  View details for Web of Science ID A1996VU60400027

• Effectiveness of ice packs in reducing skin temperature under casts CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Metzman, L., Gamble, J. G., Rinsky, L. A. 1996: 217-221

  Abstract

  Skin temperature lowering effects were measured after application of crushed ice packs to the surface of synthetic and plaster casts. The skin temperature of legs in synthetic casts decreased an average of 10.4 degrees C (range, 8.3 degrees-12.6 degrees) to a minimum temperature of 19.7 degrees C (range, 16.2 degrees-21.8 degrees), and the temperature of legs in plaster casts decreased an average of 11 degrees C to a minimum of 18.7 degrees C (range, 13 degrees-22.8 degrees). It took an average of 56 minutes (range, 40-80 minutes) for the legs in synthetic casts and 63.8 minutes (range, 26-116 minutes) for the legs in plaster casts to reach the minimum temperature. Cryotherapy is used clinically with the intention of lowering skin temperature and presumably decreasing the pain and swelling of a patient's injured extremity. The presence of a synthetic or a plaster cast does not eliminate the lowering effects of skin temperature when crushed ice packs are applied to the surface of the casts.

  View details for Web of Science ID A1996VG55100029

  View details for PubMedID 8804296

• Erroneous interpretation of magnetic resonance images of a fracture of the first rib with non-union. Two case reports. journal of bone and joint surgery. American volume Gamble, J. G., Comstock, C., Rinsky, L. A. 1995; 77 (12): 1883-1887

  View details for PubMedID 8550657

• Erroneous interpretation of magnetic resonance images of a fracture of the first rib with non-union - Two case reports JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Gamble, J. G., Comstock, C., Rinsky, L. A. 1995; 77A (12): 1883-1887

  View details for Web of Science ID A1995TL78100013

• GASTROINTESTINAL PROBLEMS IN PATIENTS WHO HAVE TYPE-III OSTEOGENESIS IMPERFECTA JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Lee, J. H., Gamble, J. G., Moore, R. E., Rinsky, L. A. 1995; 77 (9): 1352-1356

  Abstract

  We performed a study of forty-three patients who had type-III osteogenesis imperfecta. Our purpose was to determine the frequency and severity of abdominal problems and the relationship between these problems and pelvic deformity. Twelve patients had had recurrent episodes of abdominal pain. Eleven of them had a history of chronic constipation, and five had been treated for fecal impaction. Radiographs had been made for ten of these patients, and eight of them had radiographic evidence of pelvic deformity with severe acetabular protrusion. Chronic constipation and recurrent abdominal pain are more frequent in patients who have osteogenesis imperfecta and acetabular protrusion than in those who do not have protrusion. These patients may benefit from early attention to a bowel program and referral to a gastrointestinal specialist.

  View details for PubMedID 7673285

• MUSCLE PATHOLOGY AND CLINICAL MEASURES OF DISABILITY IN CHILDREN WITH CEREBRAL-PALSY JOURNAL OF ORTHOPAEDIC RESEARCH Rose, J., Haskell, W. L., Gamble, J. G., Hamilton, R. L., Brown, D. A., Rinsky, L. 1994; 12 (6): 758-768

  Abstract

  We performed a histologic and morphometric study of spastic muscle from 10 children with diplegic cerebral palsy, comparing muscle structure with the gait parameters of energy expenditure index and dynamic electromyography. Variations in fiber area within and between fiber types were increased significantly in children with cerebral palsy. In each of the control subjects, the combined coefficient of variation for type-1 and type-2 fiber area was less than 25% and the average was 17%; in the subjects with cerebral palsy, the combined coefficient of variation was more than 25% and the average was 36% (p < or = 0.004). The average difference between the mean area of type-1 and type-2 fibers was 26.7 +/- 18.9% for subjects with cerebral palsy and 4.2 +/- 2.4% for control subjects (p < or = 0.004). There was a 67% predominance of one fiber type in the subjects with cerebral palsy compared with a 55% predominance in the control subjects (p < or = 0.03). The difference between the total area of type-1 and type-2 fibers was 57% in the subjects with cerebral palsy and 17% in the control subjects (p < or = 0.002). There was a significant correlation between the combined coefficient of variation of fiber area and the energy expenditure index (r = 0.77, p < or = 0.03). The difference between the mean area of type-1 and type-2 fibers correlated with prolongation of electromyographic activity (r = 0.69, p < or = 0.05). No abnormalities in fiber ultrastructure were found in the subjects with cerebral palsy. Children with cerebral palsy had abnormal variation in the size of muscle fibers and altered distribution of fiber types. The values for variation in fiber area correlated with the energy expenditure index and with prolongation of electromyographic activity during walking.

  View details for Web of Science ID A1994PW53900002

  View details for PubMedID 7983551

• USE OF APROTININ TO REDUCE INTRAOPERATIVE BLEEDING WESTERN JOURNAL OF MEDICINE Feeley, T. W., Rinsky, L. A. 1993; 159 (2): 189-192

  View details for Web of Science ID A1993LT40300013

  View details for PubMedID 7692676

• ADVANCES IN MANAGEMENT OF IDIOPATHIC SCOLIOSIS HOSPITAL PRACTICE Rinsky, L. A. 1992; 27 (4): 49-55

  Abstract

  Management rests on two critical questions: whether the curve is likely to progress before cessation of growth, and whether further progression can be expected in the mature patient. With regard to both questions, we have learned a number of important lessons from mass screening and its follow-up. Along the way, a number of questionable technologies have been discarded.

  View details for Web of Science ID A1992HN96700007

  View details for PubMedID 1560077

• LONG-TERM SCINTIGRAPHIC APPEARANCE OF EXTREMITIES FOLLOWING BONE-TUMOR RESECTION AND ALLOGRAFT RECONSTRUCTION CLINICAL NUCLEAR MEDICINE SMITH, J. T., Smith, L. M., Rinsky, L., Goris, M. L. 1991; 16 (12): 907-909

  Abstract

  The authors retrospectively reviewed the Tc-99m medronate scan findings in six patients who had no evidence of metastatic disease following en bloc resection of a primary osteosarcoma and subsequent limb reconstruction using allograft bone. Persistently increased radionuclide uptake was noted at the junction between the host bone and the graft, while the graft cortical bone showed persistently decreased activity. Radionuclide uptake at the periphery of the graft varied. Over time the youngest patient in the series had increasingly normal scan findings.

  View details for Web of Science ID A1991KC60900005

  View details for PubMedID 1663013

• TRANSVERSE CERVICOPERTROCHANTERIC HIP FRACTURE JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., LETTICE, J., SMITH, J. T., Rinsky, L. A. 1991; 11 (6): 779-782

  Abstract

  A 3-year-old boy sustained a previously undescribed transverse hip fracture that involved the cervical, cervicotrochanteric, and intertrochanteric regions. The fracture was successfully treated with skeletal traction for 4 weeks using a Steinmann pin placed through the distal femoral metaphysis followed by spica cast immobilization. The 3-year follow-up examination demonstrated satisfactory growth and remodeling of the proximal femur with no evidence of osteonecrosis, premature physeal closure, or coxa vara.

  View details for Web of Science ID A1991GM56700016

  View details for PubMedID 1960206

• SIMPLE METHOD OF DOCUMENTING METATARSUS ADDUCTUS JOURNAL OF PEDIATRIC ORTHOPAEDICS SMITH, J. T., BLECK, E. E., Gamble, J. G., Rinsky, L. A., Pena, T. 1991; 11 (5): 679-680

  Abstract

  A simple, accurate, and inexpensive method of documenting metatarsus adductus involves taking photocopies of the foot in the weightbearing position. Subsequently, treatment progress can be assessed objectively by reviewing serial photocopies. Some caution is urged because the strength of the glass copying surface of photocopying machines is unknown.

  View details for Web of Science ID A1991GD03600023

  View details for PubMedID 1918361

• Arthropathy of the ankle in hemophilia. journal of bone and joint surgery. American volume Gamble, J. G., BELLAH, J., Rinsky, L. A., Glader, B. 1991; 73 (7): 1008-1015

  Abstract

  Seventy-five patients who had hemophilia were followed clinically and roentgenographically to assess the prevalence of hemarthrosis and the prevalence and severity of arthropathy of the ankle. The mean age of the patients at the time of follow-up was twenty-two years and seven months. The patients were divided into four age-groups: less than ten years (eleven patients), ten to nineteen years (twenty-one patients), twenty to thirty years (twenty-four patients), and more than thirty years (nineteen patients). Intra-articular bleeding occurred more frequently in the joints of the lower extremities than in the joints of the upper extremities. During the second decade of life, hemarthroses occurred more often in the ankle than in the knee. A history of recurrent bleeding into the ankle joint, chronic synovitis, and overgrowth of the medial portion of the distal tibial epiphysis was associated with an early onset of arthropathy. In older patients, compression arthrodesis of the ankle joint was helpful in eliminating pain, recurrent bleeding, and equinus deformity.

  View details for PubMedID 1908466

• ARTHROPATHY OF THE ANKLE IN HEMOPHILIA JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Gamble, J. G., BELLAH, J., Rinsky, L. A., Glader, B. 1991; 73A (7): 1008-1015

  Abstract

  Seventy-five patients who had hemophilia were followed clinically and roentgenographically to assess the prevalence of hemarthrosis and the prevalence and severity of arthropathy of the ankle. The mean age of the patients at the time of follow-up was twenty-two years and seven months. The patients were divided into four age-groups: less than ten years (eleven patients), ten to nineteen years (twenty-one patients), twenty to thirty years (twenty-four patients), and more than thirty years (nineteen patients). Intra-articular bleeding occurred more frequently in the joints of the lower extremities than in the joints of the upper extremities. During the second decade of life, hemarthroses occurred more often in the ankle than in the knee. A history of recurrent bleeding into the ankle joint, chronic synovitis, and overgrowth of the medial portion of the distal tibial epiphysis was associated with an early onset of arthropathy. In older patients, compression arthrodesis of the ankle joint was helpful in eliminating pain, recurrent bleeding, and equinus deformity.

  View details for Web of Science ID A1991GC97300007

• SIMULTANEOUS CORRECTION OF PELVIC OBLIQUITY, FRONTAL PLANE, AND SAGITTAL PLANE DEFORMITIES IN NEUROMUSCULAR SCOLIOSIS USING A UNIT ROD WITH SEGMENTAL SUBLAMINAR WIRES - A PRELIMINARY-REPORT JOURNAL OF PEDIATRIC ORTHOPAEDICS Maloney, W. J., Rinsky, L. A., Gamble, J. G. 1990; 10 (6): 742-749

  Abstract

  Ten patients with neuromuscular scoliosis and pelvic obliquity had segmental spinal instrumentation using a unit Luque rod with sublaminar wires and fixation into the pelvis. Nine of the 10 patients also had anterior spinal fusion without instrumentation before the posterior procedure. Average preoperative pelvic obliquity was 42 degrees which was corrected to 6 degrees (82% correction). Average preoperative scoliosis was 92 degrees, which was corrected to 16 degrees (81% correction). Complications included a wound hematoma in one patient and a superficial wound dehiscence in another. There have been no pseudarthroses or hardware failures to date. Excellent correction of the pelvic obliquity and the spinal curve in neuromuscular scoliosis can be obtained with use of a unit rod and without use of anterior instrumentation.

  View details for Web of Science ID A1990EF61000007

  View details for PubMedID 2250058

• ESTABLISHED HIP DISLOCATIONS IN CHILDREN WITH CEREBRAL-PALSY CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Gamble, J. G., Rinsky, L. A., BLECK, E. E. 1990: 90-99

  Abstract

  Hip dislocation in children with cerebral palsy is caused by a combination of factors, including spastic muscle imbalance, persistent fetal femoral geometry, acetabular dysplasia, and flexion-adduction contracture. The incidence of dislocation correlates with the severity of the spasticity, and the prevalence is close to 50% in neurologically immature, spastic quadriplegic children. Successful hip reductions improve muscular balance, provide satisfactory reduction of the femoral head, and establish good pelvic coverage. In 31 occurrences of established hip dislocation in 24 patients, the most successful operations used a combined procedure consisting of soft-tissue release, open reduction, femoral varus derotation and shortening osteotomy, and pelvic osteotomy.

  View details for Web of Science ID A1990CX27900012

  View details for PubMedID 2180606

• SURGERY OF SPINAL DEFORMITY IN CEREBRAL-PALSY - 12 YEARS IN THE EVOLUTION OF SCOLIOSIS MANAGEMENT CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Rinsky, L. A. 1990: 100-109

  Abstract

  In order to assess the lessons learned from 12 years of surgery on patients with cerebral palsy and spinal deformity, the cases may be divided into three groups classified according to type of posterior spinal fusion, instrumentation, and time period. Group I (1976-1980) included patients who had Harrington rods, usually with Dwyer instrumentation. Group II (1980-1985) consisted of patients with unlinked Luque or wired-in Harrington rods. Group III (1985-1988) comprised patients with a unit Luque rod extending to the pelvis. Most patients were retarded nonwalkers who had total body involvement, pelvic obliquity, and severe thoracolumbar curves (Group I average, 97 degrees; Group II average, 72 degrees; Group III average, 89 degrees). The frontal plane correction at follow-up study averaged 51% in Group I, 47% in Group II, and 76% in Group III. The correction of the pelvic obliquity averaged 71% in Group I, 58% in Group II, and 86% in Group III. The general trend was toward longer fusion, use of the unit 0.625-cm Luque rod, and first-stage anterior discectomy and fusion without anterior instrumentation. The second-stage posterior arthrodesis and fusion is now performed only one week after the first-stage anterior procedure. Skeletal traction has been abandoned. The Luque rod instrumentation without fusion has also been abandoned.

  View details for Web of Science ID A1990CX27900013

  View details for PubMedID 2317962

• GAIT ELECTROMYOGRAMS AND SURGICAL DECISIONS FOR PARALYTIC DEFORMITIES OF THE FOOT DEVELOPMENTAL MEDICINE AND CHILD NEUROLOGY ADLER, N., BLECK, E. E., Rinsky, L. A. 1989; 31 (3): 287-292

  Abstract

  Twenty-one patients who had 23 gait electromyographic (EMG) examinations for paralytic deformities of the foot had surgical procedures performed. Outcome of the surgery was analysed with respect to the value of the pre-operative gait studies in deciding on appropriate surgical procedures. When outcome at follow-up (mean 3.6 years) was satisfactory and surgery had been in accordance with the EMG findings, or when outcome was unsatisfactory when the EMG had been disregarded, the value was deemed positive. Conversely, if the EMG data had been disregarded but outcome was satisfactory, the value was negative. Using these criteria, 70 per cent of the EMGs of the four muscles tested (tibialis anterior and posterior, peroneal and gastrocnemius) were a positive contribution to the evaluation and decision for the particular surgical procedure.

  View details for Web of Science ID A1989AC36100002

  View details for PubMedID 2753236

• Trapeziometacarpal abnormalities in Ehlers-Danlos syndrome. journal of hand surgery Gamble, J. G., Mochizuki, C., Rinsky, L. A. 1989; 14 (1): 89-94

  Abstract

  We studied 24 patients with Ehlers-Danlos syndrome with particular attention to the thumb and the trapeziometacarpal joint. The 11 males and 13 females had a mean age of 15.9 years. Symptomatic complaints included pinch, grip and twisting weakness; measurements showed dominant hand strength deficits of 71% for tip pinch, 55% for palmar pinch, 46% for key pinch, and 70% for grip. All finger joint ranges of motion were increased. Sixty-six percent of all the patients had trapeziometacarpal subluxation; 29% had dislocation. Sixteen percent had radiographic evidence of arthritis. Early occupational therapy evaluation and education can help these patients better understand and adapt to their limitations.

  View details for PubMedID 2786020

• TRAPEZIOMETACARPAL ABNORMALITIES IN EHLERS-DANLOS SYNDROME JOURNAL OF HAND SURGERY-AMERICAN VOLUME Gamble, J. G., Mochizuki, C., Rinsky, L. A. 1989; 14A (1): 89-94

  View details for Web of Science ID A1989R777900013

• COMPLICATIONS OF INTRAMEDULLARY RODS IN OSTEOGENESIS IMPERFECTA - BAILEY-DUBOW RODS VERSUS NONELONGATING RODS JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., Strudwick, W. J., Rinsky, L. A., BLECK, E. E. 1988; 8 (6): 645-649

  Abstract

  Twenty-nine patients with osteogenesis imperfecta underwent 108 intramedullary roddings with 42 Bailey-Dubow rods and 66 nonelongating rods. The average age at insertion of the first rod was 5 years; average follow-up was 3.1 years (range 1-9 years). The overall complication rate was 60%-69% for Bailey-Dubow rods and 55% for nonelongating rods. Forty-seven percent of bones receiving rods required reoperation. Nonelongating rods had a 29% reoperation rate and a 24% replacement rate; Bailey-Dubow rods had a 19% reoperation rate and a 12% replacement rate.

  View details for Web of Science ID A1988Q655600003

  View details for PubMedID 3056970

• Orthopaedic aspects of central core disease. journal of bone and joint surgery. American volume Gamble, J. G., Rinsky, L. A., Lee, J. H. 1988; 70 (7): 1061-1066

  Abstract

  We studied the cases of fifteen patients who had central core disease, a non-progressive congenital myopathy that is usually inherited as an autosomal dominant trait. As infants, the patients had poor muscle tone and developmental delay, and as adolescents and adults, they had varying degrees of proximal muscle weakness and tended to use the Gower maneuver. The most common musculoskeletal problems were dislocation or subluxation of the hip, pes planus, and hypermobility of the joints. The most serious orthopaedic problems were in the hips: ten patients had a total of nine dislocations and six subluxations, nine being present at birth and six developing later. Only nine hips were stable after the initial treatment, and there was a propensity for hip-joint contractures. Scoliosis and patellar instability were also seen. Although patients who have central core disease have been reported to be at increased risk for malignant hyperthermia, this did not occur in our patients.

  View details for PubMedID 3403575

• ORTHOPEDIC ASPECTS OF CENTRAL CORE DISEASE JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Gamble, J. G., Rinsky, L. A., Lee, J. H. 1988; 70A (7): 1061-1066

  Abstract

  We studied the cases of fifteen patients who had central core disease, a non-progressive congenital myopathy that is usually inherited as an autosomal dominant trait. As infants, the patients had poor muscle tone and developmental delay, and as adolescents and adults, they had varying degrees of proximal muscle weakness and tended to use the Gower maneuver. The most common musculoskeletal problems were dislocation or subluxation of the hip, pes planus, and hypermobility of the joints. The most serious orthopaedic problems were in the hips: ten patients had a total of nine dislocations and six subluxations, nine being present at birth and six developing later. Only nine hips were stable after the initial treatment, and there was a propensity for hip-joint contractures. Scoliosis and patellar instability were also seen. Although patients who have central core disease have been reported to be at increased risk for malignant hyperthermia, this did not occur in our patients.

  View details for Web of Science ID A1988P831300015

• KINGELLA-KINGAE INFECTION IN HEALTHY-CHILDREN JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., Rinsky, L. A. 1988; 8 (4): 445-449

  Abstract

  Kingella kingae is a gram-negative occasional, but normal, inhabitant of the nasopharynx. We present two new cases of this infection that occurred in previously healthy children, and compare and contrast them to other cases reported in the literature. K. kingae osteomyelitis generally has an insidious, subacute onset, whereas septic arthritis has an acute presentation. To date, all strains of K. kingae have been sensitive to penicillin, and no residual damage has been reported following osteomyelitis or septic arthritis, except that residual disk space narrowing did occur after K. kingae discitis.

  View details for Web of Science ID A1988N916200012

  View details for PubMedID 3292580

• Non-union of fractures in children who have osteogenesis imperfecta. journal of bone and joint surgery. American volume Gamble, J. G., Rinsky, L. A., STRUDWICK, J., BLECK, E. E. 1988; 70 (3): 439-443

  Abstract

  Although a fracture rarely fails to unite in a healthy child, non-union is not a rare occurrence in a child who has osteogenesis imperfecta. We identified twelve non-unions in ten patients from a population of fifty-two patients who had osteogenesis imperfecta. The average age of these patients when the diagnosis of non-union was made nine years, and the average age at the time of treatment was 12.5 years. All of the patients had had a decrease in functional ability as a result of the non-union. There were five femoral, four humeral, one radial, one ulnar, and one pubic non-union. Five of the non-unions were hypertrophic, and seven were atrophic. Eight of the nine ununited fractures that were operated on healed after excision of the non-union, intramedullary nailing, and bone-grafting. Three of the non-unions (in two patients) were not operated on, and the one patient in whom surgery failed had an amputation. Non-union was frequently associated with repeated fractures at a progressively deforming site.

  View details for PubMedID 3346270

• NON-UNION OF FRACTURES IN CHILDREN WHO HAVE OSTEOGENESIS IMPERFECTA JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Gamble, J. G., Rinsky, L. A., STRUDWICK, J., BLECK, E. E. 1988; 70A (3): 439-443

  View details for Web of Science ID A1988M630300018

• ADOLESCENT IDIOPATHIC SCOLIOSIS WESTERN JOURNAL OF MEDICINE Rinsky, L. A., Gamble, J. G. 1988; 148 (2): 182-191

  Abstract

  Adolescent idiopathic scoliosis is the single most common form of spinal deformity seen in orthopedic practice. Our knowledge about the epidemiology, etiology, natural history, and treatment has recently increased dramatically. The incidence of small curves is rather high (2% of the population), whereas severe curves are much less common (<0.1%), but we cannot always predict which curve will progress. Abnormalities of the neuromuscular system and of calcium metabolism, and certain growth, genetic, and mechanical factors may all play roles in the pathogenesis of the disorder. The physiologic secondary effects of severe scoliosis relate to restrictive lung disease, but most patients do not have a deformity great enough to affect their cardiorespiratory function. The psychological and social effects of scoliosis are significant for patients but difficult to quantitate. For most patients with moderate scoliosis-that is, more than 25 to 30 degrees-treatment with an underarm brace or electrical stimulation is adequate to "control" progression of the curve. Surgical fusion allows actual correction of the curve but is indicated in only a small percentage of patients-usually those with more than 50 degrees of deformity.

  View details for Web of Science ID A1988M118200005

  View details for PubMedID 3279708

  View details for PubMedCentralID PMC1026057

• BALANCE REACTIONS AND EYE HAND COORDINATION IN IDIOPATHIC SCOLIOSIS JOURNAL OF ORTHOPAEDIC RESEARCH ADLER, N., BLECK, E. E., Rinsky, L. A., Young, W. 1986; 4 (1): 102-107

  Abstract

  We undertook this study to determine if subclinical postural control mechanisms were abnormal in idiopathic scoliosis. Ninety-one female patients and fifty-seven age-matched female controls were examined. We used a force plate ataxiometer to quantitate postural sway in the standing position and recorded the displacement and acceleration of the center of pressure during static stance and under perturbation with eyes opened and closed. A joystick-controlled video system was used to measure reaction time and eye-hand motor coordination. The scoliosis group demonstrated significantly less sway during two of the eight standing balance conditions and on the remaining balance tests there was a similar trend, albeit nonsignificant. The reaction time for the scoliosis group was also significantly slower, but the accuracy was not significantly worse. We noted no statistical differences between progressive and nonprogressive or between braced and unbraced patients. The subgroup of patients whose curves progressed despite bracing had a tendency to demonstrate greater stability on all standing tests. They also exhibited faster reaction times and less error in eye-hand coordination than other patient groups. No correlation existed between severity of curve and test performance. We found no indication of deficient balance in idiopathic scoliosis, and the tests could not predict curve progression.

  View details for Web of Science ID A1986A508600013

  View details for PubMedID 3950801

• A NEW BENDING DEVICE FOR LUQUE RODS SPINE Rinsky, L. A., Gamble, J. G. 1986; 11 (1): 52-54

  View details for Web of Science ID A1986A916500014

  View details for PubMedID 3704782

• CHRONIC RECURRENT MULTIFOCAL OSTEOMYELITIS - A DISTINCT CLINICAL ENTITY JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., Rinsky, L. A. 1986; 6 (5): 579-584

  Abstract

  We reviewed the cases of five children with the diagnosis of chronic recurrent multifocal osteomyelitis (CRMO) and compared and contrasted them to 11 cases of subacute osteomyelitis. Significant differences were found between these two groups in the number of cases with positive biopsy cultures, number of clinical episodes, and number of bones involved. In CRMO, cultures are negative, and recurrent clinical episodes involve different bones at different times. The data indicate that CRMO is a distinct clinical entity, different from subacute osteomyelitis; it is a benign, self-limiting inflammatory disease of bone, and no chronic problems have occurred as a result of CRMO. Restraint in antibiotic treatment and in performing repeated biopsies is indicated in CRMO.

  View details for Web of Science ID A1986D802800010

  View details for PubMedID 3760168

• COMBINED OCCIPITOATLANTOAXIAL HYPERMOBILITY WITH ANTERIOR AND POSTERIOR ARCH DEFECTS OF THE ATLAS IN PIERRE-ROBIN SYNDROME JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., Rinsky, L. A. 1985; 5 (4): 475-478

  Abstract

  Combined occipitoatlantoaxial instability of the cervical spine occurred in a 8-year-3-month old boy with Pierre-Robin syndrome. He also had failure of ossification of both the anterior and posterior arches of the atlas. An in situ fusion from the occiput to C2 restored cervical spine stability. This case is discussed in relation to other hypermobility and instability syndromes of the cervical spine.

  View details for Web of Science ID A1985ALA9400018

  View details for PubMedID 4019764

• COXA MAGNA FOLLOWING SURGICAL-TREATMENT OF CONGENITAL HIP DISLOCATION JOURNAL OF PEDIATRIC ORTHOPAEDICS Gamble, J. G., Mochizuki, C., BLECK, E. E., Rinsky, L. A. 1985; 5 (5): 528-533

  Abstract

  We studied coxa magna after operative treatment of congenital dislocation of the hip, including incidence, relationship to treatment, and influence of coxa magna on the acetabulum. Coxa magna was defined as a femoral head with a horizontal diameter at least 15% greater than the symmetrical position on the opposite side. Coxa magna developed in 16 hips (33%). The mean increase was 20.9% (range 15-30%). Three factors correlated with coxa magna: femoral osteotomy (100%), open reduction (75%), and operation at a younger age (mean 15.6 vs. 35.8 months). Four of the 16 hips developed coxa magna following Type 1 avascular necrosis; no other growth deformities appeared. At follow-up, the acetabular indices and the center edge angles were not statistically different between the coxa magna and the control groups. One must avoid confusing coxa magna with hip subluxation or inadequate reduction, of which the latter requires appropriate treatment. Coxa magna gives a good hip if a concentric, congruous reduction is obtained, providing the acetabulum has enough growth potential for remodeling.

  View details for Web of Science ID A1985APK9600004

  View details for PubMedID 4044810

• SEGMENTAL INSTRUMENTATION WITHOUT FUSION IN CHILDREN WITH PROGRESSIVE SCOLIOSIS JOURNAL OF PEDIATRIC ORTHOPAEDICS Rinsky, L. A., Gamble, J. G., BLECK, E. E. 1985; 5 (6): 687-690

  Abstract

  Nine young children had segmental spinal stabilization without fusion for progressive scoliosis. External bracing was not used. There were no immediate complications, but at a mean follow-up of 28 months, the mean loss of correction was 32% and only four patients maintained the initial correction. The mean interval spinal growth was only 0.8 cm. Rods failed in three patients, requiring revision and fusion. Thus, the early results of this technique are discouraging.

  View details for Web of Science ID A1985AVD8800011

  View details for PubMedID 4066943

• ACETABULAR OSTEOMYELITIS IN CHILDREN CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Gamble, J. G., Rinsky, L. A., BLECK, E. E. 1984: 71-74

  Abstract

  The clinical, laboratory, and roentgenographic features of acetabular osteomyelitis were present in a 20-month-old boy and a five-year-old girl. The clinical and laboratory parameters were similar in extracapsular acetabular osteomyelitis and septic arthritis of the hip. A secondary effusion was evident in roentgenograms in both conditions. Acetabular osteomyelitis responded to selected intravenous antibiotic therapy. Septic arthritis of the hip required immediate surgical drainage as well as appropriate antibiotic coverage.

  View details for Web of Science ID A1984SW27700012

  View details for PubMedID 6723163

• THE CISTERNA CHYLI IN ORTHOPEDIC-SURGERY SPINE PROPSTPROCTOR, S. L., Rinsky, L. A., BLECK, E. E. 1983; 8 (7): 787-792

  Abstract

  The cisterna chyli is normally hidden in prevertebral tissue and rarely encountered by orthopaedic surgeons. However, hyperextension injury and anterior surgical approach to the spine can result in injury and the complication of chylothorax. Prevention of postoperative chylothorax is mainly through awareness of normal anatomic distribution. If a chylothorax occurs, conservative treatment should be instituted (ie, thoracentesis and/or intercostal tube drainage). If drainage persists, exploration may be required to ligate ducts. Intraoperative discovery of an injury can be treated with ligation or repair. Ten orthopaedic spine surgeons were surveyed (estimated 1000 anterior spinal approaches) disclosing observation of the structure 12 times and chylothorax on only three occasions. When using the anterior approach in both spinal trauma and deformity, one must be aware of the structure and the potential complication of injury.

  View details for Web of Science ID A1983RY79100017

  View details for PubMedID 6665581

• MOIRE PHOTOTOPOGRAPHY IN THE EVALUATION OF ANTERIOR CHEST WALL DEFORMITIES JOURNAL OF PEDIATRIC SURGERY Shochat, S. J., CSONGRADI, J. J., Hartman, G. E., Rinsky, L. A. 1981; 16 (3): 353-357

  Abstract

  One of the major remaining problems in the management of children with anterior chest wall deformities is the lack of a widely accepted objective method of evaluating the severity of the deformity. This deficiency has made it difficult to evaluate indications for operation or the results of operative repair. Moiré phototopography is a new method of accurately measuring human body contours utilizing recent developments in applied optics and has been used successfully in scoliosis screening programs. This technique has been applied to the evaluation of anterior chest wall deformities and the initial results of this study are presented. Moiré phototopography has proven to be a sensitive, reproducible, and easy to perform method of quantitating pectus deformities. While further evaluation is required, this early experience suggests this technique may provide a means of accurately and objectively measuring chest wall deformities so that their physiologic significance can be precisely investigated and the results of therapy critically reviewed.

  View details for Web of Science ID A1981LS41400026

  View details for PubMedID 7252740

• PERSPECTIVES ON SURGERY FOR SCOLIOSIS IN MENTALLY-RETARDED PATIENTS ORTHOPEDIC CLINICS OF NORTH AMERICA Rinsky, L. A. 1981; 12 (1): 113-126

  Abstract

  The goals of surgery in the retarded patient with spinal deformity are to maximize function (for example, free the hands, decrease the occurrence of pressure sores, and so forth). Concomitantly, the goal while treating the patient should be to minimize the interference with social, intellectual, and general development while counting on no operation by the patient. The new tools of internal fixation available to the surgeon have made spinal surgery possible in these patients despite their lack of cooperation and their other medical problems, seizures, and spasticity. Although combined Dwyer instrumentation with subsequent posterior Harrington instrumentation or posterior fusion and Harrington instrumentation alone have been used most commonly, recent favorable experience suggests a larger role for segmental stabilization of the spine because of the greater purchase on the spine and the lack of need for prolonged external mobilization.

  View details for Web of Science ID A1981LB86800012

  View details for PubMedID 7207981

• INTRAOPERATIVE SKELETAL SCINTIGRAPHY FOR LOCALIZATION OF OSTEOID-OSTEOMA IN THE SPINE - CASE-REPORT JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Rinsky, L. A., Goris, M., BLECK, E. E., Halpern, A., HIRSHMAN, P. 1980; 62 (1): 143-144

  View details for Web of Science ID A1980JC56500025

  View details for PubMedID 7351408

• COCCIDIOIDOMYCOSIS OF THE SPINE - UNUSUAL ROENTGENOGRAPHIC PRESENTATION CLINICAL ORTHOPAEDICS AND RELATED RESEARCH HALPERN, A. A., Rinsky, L. A., Fountain, S., Nagel, D. A. 1979: 78-79

  Abstract

  Vertebral osteomyelitis is a frequent consequence of disseminated coccidioidomycosis. In a 25-year-old man, the sequela was a single level unilateral osseous bridge between the second and third lumbar vertebra. A review of previous cases has disclosed one case with a similar roentgenographic picture. The occurrence of a single level unilateral reactive process should arouse suspicion of a localized chronic bone infection.

  View details for Web of Science ID A1979HH34700016

  View details for PubMedID 477088

• DOES PERSISTENT FETAL FEMORAL ANTEVERSION CONTRIBUTE TO OSTEO-ARTHRITIS - A PRELIMINARY-REPORT CLINICAL ORTHOPAEDICS AND RELATED RESEARCH HALPERN, A. A., Tanner, J., Rinsky, L. 1979: 213-216

  Abstract

  Persistence of femoral anteversion into adulthood is a developmental abnormality which Somerville has postulated may predispose to the later development of osteoarthritis of the hip. To test this hypothesis, the femoral anteversion was measured in 20 adult patients with idiopathic osteoarthritis of the hip. The average anteversion in painful hips was found to be 24 degrees compared with 12.11 degrees in the uninvolved hip. None of the pain-free hips had an anteversion of greater than 22 degrees while 54% of those with pain had anteversion greater than this value. While these results are preliminary, they suggest that increased femoral anteversion may definitely contribute to the later development of osteoarthritis of hip.

  View details for Web of Science ID A1979JM95400033

  View details for PubMedID 535277

• MASSIVE ANKYLOSIS FOLLOWING TOTAL HIP ARTHROPLASTY CLINICAL ORTHOPAEDICS AND RELATED RESEARCH HALPERN, A. A., Rinsky, L. 1978: 51-54

  Abstract

  A total hip arthroplasty was undertaken in a 49-year-old man who had previously spontaneously ankylosed both hips. In addition, the patient possessed hyperostosis of the spine and calf, not characteristic of any previously described spondylitic or hyperostotic syndrome. Nine months postoperatively the patient reankylosed the total hip arthroplasty. This case provides further evidence that total hip arthroplasty must be undertaken with caution in patients with hyperostotic tendencies.

  View details for Web of Science ID A1978GJ88000006

  View details for PubMedID 743843

• Selective arterial embolization for hemorrhage following hip arthroplasty. Clinical orthopaedics and related research HALPERN, A. A., RINSKY, L. J., Burton, D. S. 1977: 144-148

  Abstract

  A case is presented in which selective embolization of gelfoam was used to control late postoperative bleeding, developing in a patient following hip arthroplasty. Although primarily used in gastrointestinal bleeding, diagnostic and therapeutic angiography, selective embolization is clearly applicable to postoperative bleeding encountered in orthopedics.

  View details for PubMedID 598068

• TC-99 BONE SCANNING IN EXPERIMENTAL OSTEOMYELITIS CLINICAL ORTHOPAEDICS AND RELATED RESEARCH Rinsky, L., Goris, M. L., Schurman, D. J., Nagel, D. A. 1977: 361-366

  View details for Web of Science ID A1977ED21700049

• GENERAL ORTHOPEDICS - SELECTIVE ARTERIAL EMBOLIZATION FOR HEMORRHAGE FOLLOWING HIP ARTHROPLASTY CLINICAL ORTHOPAEDICS AND RELATED RESEARCH HALPERN, A. A., RINSKY, L. J., Burton, D. S. 1977: 144-148

  View details for Web of Science ID A1977DH35100018

• A cervical spinal cord injury following chiropractic manipulation. Paraplegia Rinsky, L. A., Reynolds, G. G., JAMESON, R. M., Hamilton, R. D. 1976; 13 (4): 223-227

  Abstract

  A case is presented of a permanent C4 tetraplegia following chiropractic manipulation of a patient with ankylosing spondylitis. The pertinent literature is reviewed.

  View details for PubMedID 1264476

• FREEMAN-SHELDON (WHISTLING FACE) SYNDROME JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME Rinsky, L. A., BLECK, E. E. 1976; 58 (1): 148-150

  View details for Web of Science ID A1976BD74700033

  View details for PubMedID 814126