Wills Baird

All Publications

• Suture Anchor Fixation of the Pediatric Posteromedial and Posterolateral Menisco-Tibial Ligament Complex Matches or Exceeds Native Tissue Strength: A Cadaveric Study. Journal of ISAKOS : joint disorders & orthopaedic sports medicine Hollyer, I., Johnstone, T., Alayleh, A., vanDeursen, W., McFarlane, K., Baird, W., Chan, C., Tompkins, M., Ellis, H., Ganley, T., Yen, Y. M., Sherman, S., Shea, K. 2025: 100385

  Abstract

  To compare the biomechanical strength and stiffness of the native posteromedial and posterolateral meniscotibial ligament complex (MTLC) to suture anchor repair of the MTLC.Biomechanical testing was performed on 24 fresh-frozen pediatric human knees. Four conditions were tested: native posteromedial MTLC (n=14), native posterolateral MTLC (n=14), posteromedial MTLC repair (n=5), and posterolateral MTLC repair (n=5). Load-to-failure and stiffness were measured for all conditions.The load-to-failure for the posteromedial suture anchor construct was significantly higher than the native MTLC (p < 0.01). The posterolateral suture anchor construct had a significantly greater stiffness than the native MTLC (p = 0.03). Posterolateral MTLC load-to-failure and posteromedial MTLC stiffness were similar between native tissue and suture-anchor repair. All native MTLC failed at the meniscus-MTLC interface. The suture anchor groups had various failure modes, including suture pullout and breakage.Suture anchor fixation can match or exceed the native tissue's load-to-failure. This study supports the viability of suture anchor-based posterior MTLC repairs of the medial and lateral meniscus in pediatric bone.

  View details for DOI 10.1016/j.jisako.2025.100385

  View details for PubMedID 39798603

• Screws or Sutures? A Pediatric Cadaveric Study of Tibial Spine Fracture Repairs. The American journal of sports medicine Johnstone, T. M., Baird, D. W., Cuellar-Montes, A., van Deursen, W. H., Tompkins, M., Ganley, T. J., Yen, Y. M., Ellis, H. B., Chan, C. K., Green, D. W., Sherman, S. L., Shea, K. G. 2023: 3635465231181059

  Abstract

  Tibial spine fractures are common in the pediatric population because of the biomechanical properties of children's subchondral epiphyseal bone. Most studies in porcine or adult human bone suggest that suture fixation performs better than screw fixation, but these tissues may be poor surrogates for pediatric bone. No previous study has evaluated fixation methods in human pediatric knees.To quantify the biomechanical properties of 2-screw and 2-suture repair of tibial spine fracture in human pediatric knees.Controlled laboratory study.Cadaveric specimens were randomly assigned to either 2-screw or 2-suture fixation. A standardized Meyers-Mckeever type 3 tibial spine fracture was induced. Screw-fixation fractures were reduced with two 4.0-mm cannulated screws and washers. Suture-fixation fractures were reduced by passing 2 No. 2 FiberWire sutures through the fracture fragment and the base of the anterior cruciate ligament. Sutures were secured through bony tunnels over a 1-cm tibial cortical bridge. Each specimen was mounted at 30° of flexion. A cyclic loading protocol was applied to each specimen, followed by a load-to-failure test. Outcome measures were ultimate failure load, stiffness, and fixation elongation.Twelve matched pediatric cadaveric knees were tested. Repair groups had identical mean (8.3 years) and median (8.5 years) ages and an identical number of samples of each laterality. Ultimate failure load did not significantly differ between screw (mean ± SD, 143.52 ± 41.9 7 N) and suture (135.35 ± 47.94 N) fixations (P = .760). Screws demonstrated increased stiffness and decreased elongation, although neither result was statistically significant at the .05 level (21.79 vs 13.83 N/mm and 5.02 vs 8.46 mm; P = .076 and P = .069, respectively).Screw fixation and suture fixation of tibial spine fractures in human pediatric tissue were biomechanically comparable.Suture fixations are not biomechanically superior to screw fixations in pediatric bone. Pediatric bone fails at lower loads, and in different modes, compared with adult cadaveric bone and porcine bone. Further investigation into optimal repair is warranted, including techniques that may reduce suture pullout and "cheese-wiring" through softer pediatric bone. This study provides new biomechanical data regarding the properties of different fixation types in pediatric tibial spine fractures to inform clinical management of these injuries.

  View details for DOI 10.1177/03635465231181059

  View details for PubMedID 37382335

• Prosteria - National Trends and Outcomes of More Frequent than Guideline Recommended Prostate Specific Antigen Screening. Urology Peterson, D. J., Bhambhvani, H. P., Baird, D. R., Li, S., Eisenberg, M. L., Brooks, J. D. 2023

  Abstract

  To characterize national trends in and associated outcomes of more often than annual PSA screening, which we term "prosteria".Men in the Optum Clinformatics® Data Mart with ≥ 2 years from first PSA test to censoring at the end of insurance or available data (January 2003 to June 2019) or following exclusionary diagnoses or procedures, such as PCa treatment, were included. PSAs within 90 days were treated as one PSA. Prosteria was defined as having ≥3 PSA testing intervals of ≤270 days.9,734,077 PSAs on 2,958,923 men were included. The average inter-PSA testing interval was 1.5 years, and 4.5% of men had prosteria, which increased by 0.53% per year. Educated, wealthy, non-White patients were more likely to have prosteria. Men within the recommended screening age (i.e. 55-69) had lower rates of prosteria. Prosteria patients had higher average PSA values (2.5 vs 1.4 ng/ml), but lower values at PCa diagnosis. Prosteria was associated with biopsy and PCa diagnosis; however, there were comparable rates of treatment within 2 years of diagnosis.In this large cohort study, prosteria was common, increased over time, and was associated with demographic characteristics. Importantly, there were no clinically meaningful differences in PSA values at diagnosis or rates of early treatment, suggesting prosteria leads to both overdiagnosis and overtreatment. These results support current AUA and USPTF guidelines and can be used to counsel men seeking more frequent PSA screening.

  View details for DOI 10.1016/j.urology.2023.01.011

  View details for PubMedID 36708931