Dr. Roh is a triple boarded sports medicine specialist treating sports/activity-related osteoarthritis and tendinopathy by providing ultrasound-guided minimally invasive interventions and orthobiologics.
He started the sports & musculoskeletal ultrasound clinic and orthobiologics such as PRP in Orthopedic Surgery & Sports medicine department since his appointment in 2011.
Dr. Roh has provided ultrasound-guided interventions and orthobiologics for many elite sports teams including the professional basketball team and the professional football team. He was one of Team USA's physicians during the 2018 Olympic games and worked during the NBA finals. He serves as a team physician for the SF 49ers, Stanford Men Soccer, Golf, Fencing, and Wrestling.
Dr. Roh’s research interests include measuring outcomes of non-surgical orthobiologic treatment such as PRP, adipose tissue, or bone marrow and ultrasound-guided minimally invasive treatment for tendon injury and arthritis.
He focuses on soccer-related injury, basketball-related injury, and other arthritis or tendinopathy from repetitive use of tendon and joint.
- Non-operative Biologic treatment(PRP, Fat derived graft or bone marrow)
- Sports Injuries
- Musculoskeletal and Sports Ultrasound Medicine
- Physical Medicine and Rehab
- Musculoskeletal Regenerative Medicine
- Platelet-Rich Plasma
- Precision medicine
- Adult Stem Cell Research
- Machine Learning
Clinical Associate Professor, Orthopaedic Surgery
SF 49ers, Team physician in Sports ultrasound and Orthobiologics treatment, Stanford University Sports Medicine (2013 - Present)
Team Physician, Stanford Athletic Department (2013 - Present)
Golden State Warriors, Consultant in Sports ultrasound and Orthobiologics treatment, Stanford University Sports Medicine (2014 - 2019)
Team USA Physician, USOC(United States Olympic Committee) Team USA for 2018 Olympic games (2017 - 2018)
Director, Stanford Musculoskeletal Sports Ultrasound Medicine Service (2011 - Present)
Site Director, Residency Program PM&R, Stanford (2015 - Present)
Member and Venue Medical Officer, 2018 Winter Olympic Organizing Committee, Medical division (2016 - Present)
Honors & Awards
Best Teaching Award, Stanford PM&R (2016)
Arbor Free Clinic Chief Resident Award, Stanford University, Physical Medicine and Rehabilitation (2010)
Boards, Advisory Committees, Professional Organizations
Faculty and Mentor, Stanford ACGME PM&R Sports Medicine Fellowship (2011 - Present)
Primary team physician, Stanford Athletics (2011 - Present)
Committee Member, Stanford PM&R Education committee (2011 - Present)
Didactics organizer, Stanford PM&R Resident Musculoskeletal (2011 - Present)
Reviewer, Journal of Ultrasound Medicine (2014 - Present)
Member, American Registry For Diagnostic Medical Sonography (2011 - Present)
Member, Association of Academic Physiatrists (2011 - Present)
Member, American Medical Society for Sports Medicine (2011 - Present)
Member, American Board of Physical Medicine & Rehabilitation (2011 - Present)
Member, American Association of Physical Medicine & Rehabilitation (2011 - Present)
Member, American Association of Pain Management in Ultrasound (2011 - Present)
Member, American Board of Internal Medicine (2011 - Present)
Member, American Institute of Ultrasound in Medicine (2011 - Present)
Residency: MetroWest Medical Center Transitional Year (2007) MA
Board Certification: American Board of Physical Medicine and Rehab, Sports Medicine (2012)
Residency: Stanford Hospital and Clinics (2010) CA
Fellowship: Harvard Medical School MGH - Spaulding Rehabilitation Hospital (2011) MA
Medical Education: Yonsei University College Of Medicine (1999) South Korea
Board Certification, Sports Medicine, American Board of PM&R, ABFM (2012)
Board Certification, Musculoskeletal Ultrasound, ARDMS (American Registry for Diagnostic Medical Sonography) (2012)
Board Certification: American Board of Physical Medicine and Rehab, Physical Medicine and Rehab (2011)
Board Certification: American Board of Internal Medicine, Internal Medicine (2007)
Community and International Work
2018 Winter Olympic games
Team USA physician
Opportunities for Student Involvement
2018 Winter Olympic Organization, South Korea
Test Events for Olympic games
PyeongChang Organizing Committee for the 2018 Olympic & Paralympic Winter Games
Opportunities for Student Involvement
Current Research and Scholarly Interests
1. Peer-reviewed articles
1.Steele K, Roh EY, Ladd A, Rose J. Rotational velocity of the elite golf swing: Benchmarks for amateurs. Journal of Applied Biomechanics. Submitted.
2. Poster presentation and abstract
1. Lyly Minh, Roh EY, Distal Clavicular Osteolysis Associated with Hand-to- Hand and Combat: A Case Report, 2013 AAPM&R annual assembly
2. Dutton R, Klima R, Roh EY. Pelvic Digit As An Unusual Cause of Hip Pain: A Case Report, 2013 AAPM&R annual assembly
3. Patel A, Roh EY, Radicular Pain: A case Report, 2012 AAPM&R annual assembly
4. Roh EY, Mitra R. Chronic refractory coccydynia secondary to pilonidal cyst: A Case Report, 2010 AAPM&R annual assembly
5. Roh EY, Kay J. Use of digital pen and paper technology for collection of patient reported symptom and functional status improves physician documentation. Poster. 2005 American College of Rheumatology annual assembly.
6.Roh EY, Davis J. Clinical Characteristics of a US cohort of spondylitis patients. 2004 American College of Rheumatology annual assembly.
7.Roh EY, Tethered cord development following conservative management of acute spinal epidural hematoma. 2015 AAP Annual Meeting
Comparative Effectiveness of Particulate Versus Nonparticulate Steroid Injections for Musculoskeletal Conditions
This aims of this study are: 1. To determine if particulate or non-particulate corticosteroid injections are more effective at treating pain from musculoskeletal pathologies of the hip, glenohumeral joint, biceps tendon, or subacromial/subdeltoid bursa at 2 weeks, 3 months, or 6 months. 2. To determine if there is a significantly different side effect profile between particulate and non-particulate corticosteroids when used for hip, glenohumeral joint, biceps tendon, or subacromial/subdeltoid bursa injections.
The Effect of Micro Fragmented Adipose Tissue (MFAT) on Knee Osteoarthritis
This is a non-surgical trial comparing the clinical and functional outcomes of patients with osteoarthritis treated with Intra-articular injection of Micro Fragmented Adipose Tissue versus conventional therapy of intra-articular injection of corticosteroid.
Graduate and Fellowship Programs
PM& R Sports Medicine (Fellowship Program)
Team's Average Acute:Chronic Workload Ratio Correlates with Injury Risk in NCAA Men's Soccer Team.
PM & R : the journal of injury, function, and rehabilitation
INTRODUCTION: Research in multiple sports has shown that an individual's acute:chronic workload ratio (ACWR) correlates with injury. However, tailoring team trainings to each individual's ACWR is technically challenging, and has not been found to decrease injury risk.OBJECTIVE: We aimed to establish a more feasible method of utilizing the ACWR for injury prevention in soccer. In an NCAA men's soccer team, we assessed whether the team's average ACWR, as opposed to that of each individual, correlated with injuries sustained throughout the season.DESIGN: Injury and workload data were retrospectively evaluated for all players (n=23) of an NCAA men's soccer team during one 18-week season. Workload data for 5 GPS-derived workload variables (total distance, high-speed distance, accelerations, player load, and average velocity) were used to calculate the team's average daily acute and chronic workloads (accumulated load for each variable during the past 3 and 28days, respectively), and uncoupled ACWRs (acute workload divided by chronic workload for each variable). A retrospective cohort design was used to compare the team's workloads and ACWRs on days where ≥1 injury occurred versus days where 0 injuries occurred using binary logistic regression models.RESULTS: Trainings/games with injuries had higher acute workloads, lower chronic workloads, and higher ACWRs for all 5 workload variables. In multivariable analysis, risk factors for injury included a low chronic workload for total distance (OR 7.23, p=0.024) and an ACWR >1.4 for accelerations (OR 4.34, p=0.029).CONCLUSIONS: The team's injury risk was greater with low distance accumulation during the chronic period, and with an elevated ACWR for accelerations. Future intervention-based studies aimed at using ACWR load-management principles as a method of decreasing injury risk in soccer can consider tracking the team's average values with the goal of maintaining a consistent chronic workload for total distance and avoiding elevations in the ACWR for accelerations. This article is protected by copyright. All rights reserved.
View details for DOI 10.1002/pmrj.12923
View details for PubMedID 36411734
Impact of Scalene Muscle Botulinum Toxin Injection With and Without Surgery in Neurogenic Thoracic Outlet Syndrome.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine
Scalene blocks are part of both the diagnostic and treatment algorithm for patients presenting with symptoms of neurogenic thoracic outlet syndrome (nTOS). However, there is a paucity of data on the utility of scalene botulinum toxin injection (BTI) before surgical decompression. We sought to determine the impact of BTI with and without surgery at a multidisciplinary referral center.Retrospective cohort study.Single institution tertiary academic center, 2011 to 2020.Seventy-seven consecutive patients.Scalene muscle BTI for nTOS with or without surgical decompression.Pain relief and Quick Disability of the Arm, Shoulder and Hand (QDASH) score.Seventy-seven patients, with a mean age of 31.4 years, had BTI for symptoms of nTOS. All patients underwent pretreatment physical therapy through the Edgelow protocol for a mean duration of 3.4 months. However, 72.7% had dynamic vascular compression on duplex ultrasound with provocative maneuvers and 85.7% had a positive physical examination finding. After BTI, 77.9% reported subjective relief, confirmed by an improved QDASH disability score. Thirty-one patients (40.3%) then went on to have further persistent symptoms and proceeded with first rib resection. After BTI + Surgery, 96.8% reported symptomatic relief and had a median QDASH score improvement of 21 (range: 10-40), with all reaching minimal clinically important differences in the QDASH score after combination therapy.In this reported series of chemodenervation in patients with nTOS, BTI is helpful in alleviating symptoms before definitive surgical decompression. BTI followed by first rib resection provides additional symptom improvement over BTI alone.
View details for DOI 10.1097/JSM.0000000000001094
View details for PubMedID 36367782
Impact of Scalene Muscle Botulinum Toxin Injection with and without Surgery in Neurogenic Thoracic Outlet Syndrome
MOSBY-ELSEVIER. 2021: E410
View details for Web of Science ID 000707158200201
Ultrasound of Thumb Muscles and Grasp Strength in Early Thumb Carpometacarpal Osteoarthritis.
The Journal of hand surgery
PURPOSE: The pathophysiology of thumb carpometacarpal (CMC) osteoarthritis (OA) involves complex interactions between the ligaments and muscles supporting the joint. Factors such as muscle volume and strength may be more relevant in early disease. We used ultrasound as a noninvasive method to explore differences in the intrinsic hand muscles of patients with early CMC OA, as determined using physical exam and radiographs, and healthy controls. We also assessed differences in grip strength.METHODS: A convenience sample of postmenopausal women with early CMC OA diagnosed using a physical examination or radiographs was recruited from an orthopedic clinic specializing in hand surgery. Healthy controls who were matched for age and hand dominance were recruited from the same clinic. We used ultrasound to determine the length of the first metacarpal and the muscle thickness of the abductor pollicis brevis, opponens pollicis (OPP), and first dorsal interosseous. Grip strength measurements were taken using a standard Jamar dynamometer and 2 custom-designed tools for cylindrical grasp and pinch strength.RESULTS: Twenty-three subjects were enrolled, with a total of 32 thumbs measured: 15 thumbs with arthritis and 17 healthy thumbs. Multivariable logistic regression models indicated that thumbs with thicker OPP had 0.85 lower odds (95% CI= 0.71-0.97) of early OA, adjusting for hand dominance and the first metacarpal length. Linear regression models indicated no association between early OA and grip strength.CONCLUSIONS: The size of OPP may have a weak association with the diagnosis of early OA.CLINICAL RELEVANCE: This study supports further exploration of the role of OPP in stabilizing the CMC joint, particularly with regard to minimizing joint subluxation. This may be clinically relevant to providers who treat patients with CMC OA early in the course of the disease, when nonsurgical treatment is the most relevant.
View details for DOI 10.1016/j.jhsa.2021.07.021
View details for PubMedID 34509311
Predictors Of Relief Following Botulinum Injection For Thoracic Outlet Syndrome
LIPPINCOTT WILLIAMS & WILKINS. 2021: 377
View details for Web of Science ID 000693955700413
Predicting Return To Play In NCAA Division 1 Athletes With Neurogenic Thoracic Outlet Syndrome
LIPPINCOTT WILLIAMS & WILKINS. 2021: 390
View details for Web of Science ID 000693955700448
Finger Pain In A Professional Dog Groomer
LIPPINCOTT WILLIAMS & WILKINS. 2020: 538–39
View details for Web of Science ID 000590026302116
Effectiveness of Ultrasound-Guided Pulsed Radiofrequency Treatment in Patients with Refractory Chronic Cervical Radicular Pain.
2020; 23 (3): E265–E272
BACKGROUND: The effect of pulsed radiofrequency (PRF) stimulation for alleviating cervical radicular pain has been demonstrated in several previous studies.OBJECTIVES: We aimed to evaluate the effectiveness of PRF with ultrasound (US) guidance in patients with chronic cervical radicular pain that was refractory to repeated transforaminal epidural steroid injections (TFESIs).STUDY DESIGN: A prospective outcome study.SETTING: The outpatient clinic of a single academic medical center.METHODS: This study included 49 patients with chronic cervical radicular pain, unresponsive to repeated TFESIs, and who underwent PRF stimulation under US guidance. Using US, a cannula was inserted toward the cervical spinal nerve. The pain intensity was evaluated using the Numeric Rating Scale (NRS-11) for cervical radicular pain at pretreatment and 1, 3, and 6 months posttreatment; and the Neck Disability Index (NDI) was used for evaluating functional disability before treatment and 6 months posttreatment. Successful pain relief was defined as >= 50% reduction in the NRS-11 score as compared with the score before treatment.RESULTS: Cervical radicular pain was significantly reduced at 1, 3, and 6 months post-PRF (P < 0.001). At 6 months post-PRF, functional disability (NDI score) had significantly reduced, and 63.3% of the patients achieved successful pain relief.LIMITATIONS: The small number of included patients and no long-term follow-up.CONCLUSIONS: PRF stimulation under the guidance of US is a potentially effective treatment method for managing refractory chronic cervical radicular pain.KEY WORDS: Ultrasound, pulsed radiofrequency, cervical radicular pain, chronic pain.
View details for PubMedID 32517402
Sigma-1 receptor PET/MRI for identifying nociceptive sources of radiating low back pain
SOC NUCLEAR MEDICINE INC. 2020
View details for Web of Science ID 000568290500159
Effectiveness of Ultrasound-Guided Pulsed Radiofrequency Treatment in Patients with Refractory Chronic Cervical Radicular Pain
2020; 23 (3): E265–E271
View details for Web of Science ID 000552905000003
Orthobiologics for the Hip Region: A Narrative Review.
PM & R : the journal of injury, function, and rehabilitation
Management of hip region disorders is challenging. Orthobiologic treatments including platelet rich plasma (PRP), mesenchymal stem cell, and amniotic injectables have gained popularity as promising treatments despite a lack of robust evidence for their effectiveness. We review rationale and current evidence for orthobiologics for three common hip region conditions: hip osteoarthritis, gluteal tendinopathy, and proximal hamstring tendinopathy. Overall, the current state of evidence is extremely limited for orthobiologic treatments. and predominantly relevant to PRP injections. There is currently a lack of data to support the use of mesenchymal stem cells or amniotic injectables in these conditions of the hip. This article is protected by copyright. All rights reserved.
View details for DOI 10.1002/pmrj.12327
View details for PubMedID 31953917
- Ultrasonographic measurement of the cross-sectional area of the axillary nerve MUSCLE & NERVE 2019; 60 (1): 95–98
ULTRASONOGRAPHIC MEASUREMENT OF THE CROSS-SECTIONAL AREA OF THE AXILLARY NERVE.
Muscle & nerve
INTRODUCTION: The objectives of this study were to determine normal reference values for ultrasonographic measurement of the cross-sectional area (CSA) of the axillary nerve and to standardize the measurement methods.METHODS: Sixty healthy volunteers were evaluated. Ultrasonography was performed with the shoulder positioned in 100°-120° abduction and 90° external rotation. The CSA of the axillary nerve was measured bilaterally.RESULTS: The normal CSA of the right axillary nerve was 2.9 ± 1.1 mm2 . The side-to-side discrepancy was 22.8% ± 17.8%.DISCUSSION: These reference values may be helpful for investigating pathologies involving the axillary nerve.
View details for PubMedID 30927449
- Golf Swing Rotational Velocity: The Essential Follow-Through ANNALS OF REHABILITATION MEDICINE-ARM 2018; 42 (5): 713–21
Golf Swing Rotational Velocity: The Essential Follow-Through.
Annals of rehabilitation medicine
2018; 42 (5): 713–21
OBJECTIVE: To evaluate if shoulder and pelvic angular velocities differ at impact or peak magnitude between professional and amateur golfers. Golf swing rotational biomechanics are a key determinant of power generation, driving distance, and injury prevention. We hypothesize that shoulder and pelvic angular velocities would be highly consistent in professionals.METHODS: Rotational velocities of the upper-torso and pelvis throughout the golf swing and in relation to phases of the golf swing were examined in 11 professionals and compared to 5 amateurs using three-dimensional motion analysis.RESULTS: Peak rotational velocities of professionals were highly consistent, demonstrating low variability (coefficient of variation [COV]), particularly upper-torso rotational velocity (COV=0.086) and pelvic rotational velocity (COV=0.079) during down swing. Peak upper-torso rotational velocity and peak X-prime, the relative rotational velocity of uppertorso versus pelvis, occurred after impact in follow-through, were reduced in amateurs compared to professionals (p=0.005 and p=0.005, respectively) and differentiated professionals from most (4/5) amateurs. In contrast, peak pelvic rotational velocity occurred in down swing. Pelvic velocity at impact was reduced in amateurs compared to professionals (p=0.019) and differentiated professionals from most (4/5) amateurs.CONCLUSION: Golf swing rotational velocity of professionals was consistent in pattern and magnitude, offering benchmarks for amateurs. Understanding golf swing rotational biomechanics can guide swing modifications to help optimize performance and prevent injury.
View details for PubMedID 30404420
Use of F-18-sodium fluoride bone PET for disability evaluation in ankle trauma: a pilot study
BMC MEDICAL IMAGING
2018; 18: 34
There are no objective and accurate rating tools for permanent impairment of traumatized ankles. The purpose of this study is to assess the role of 18F-Sodium fluoride (18F-NaF) positron emission tomography-computed tomography (PET/CT) bone scans in evaluating patients with limited ankle range of motion (ROM) after trauma.18F-NaF PET/CT was performed in 121 patients (75 men, 46 women; mean age: 45.8) who had ROM < 70% of normal after trauma affecting ankles. Metabolic target volume (MTV), the sum of voxels with standardized uptake value (SUV) > 2.5 was automatically obtained from the 3D volume that included the ankle joint. The maximum & mean SUV (SUVmax & SUVmean), and the total lesion activity (TLA) were measured.The median period from injury to performing 18F-NaF PET/CT was 290 days. The causes of injury were as follows: fracture (N = 95), Achilles tendon rupture (N = 12), and ligament injury (N = 12). Hot uptake in the ankle was seen in 113 of 121 patients. The fracture group had higher SUVmax, SUVmean, and TLA values than the non-fracture group. More limited ROM correlated with higher hot-uptake parameters (SUVmax, SUVmean, TLA). In subgroup analysis, the same correlations were present in the fracture, but not in the non-fracture group.18F-NaF PET/CT can provide considerable information in impairment evaluations of limited ankle ROM, particularly in fracture around the ankle. Thus, 18F-NaF bone PET/CT may provide an additional option as an objective imaging tool in disability assessment after ankle injury.
View details for PubMedID 30236078
- Poster 156 Synovial Osteochondromatosis as a Rare Cause of Hip Pain: A Case Report. PM & R : the journal of injury, function, and rehabilitation 2016; 8 (9S): S213-?
Comparison of Muscle Onset Activation Sequences between a Golf or Tennis Swing and Common Training Exercises Using Surface Electromyography: A Pilot Study.
Journal of sports medicine (Hindawi Publishing Corporation)
2016; 2016: 3987486-?
Aim. The purpose of this pilot study is to use surface electromyography to determine an individual athlete's typical muscle onset activation sequence when performing a golf or tennis forward swing and to use the method to assess to what degree the sequence is reproduced with common conditioning exercises and a machine designed for this purpose. Methods. Data for 18 healthy male subjects were collected for 15 muscles of the trunk and lower extremities. Data were filtered and processed to determine the average onset of muscle activation for each motion. A Spearman correlation estimated congruence of activation order between the swing and each exercise. Correlations of each group were pooled with 95% confidence intervals using a random effects meta-analytic strategy. Results. The averaged sequences differed among each athlete tested, but pooled correlations demonstrated a positive association between each exercise and the participants' natural muscle onset activation sequence. Conclusion. The selected training exercises and Turning Point™ device all partially reproduced our athletes' averaged muscle onset activation sequences for both sports. The results support consideration of a larger, adequately powered study using this method to quantify to what degree each of the selected exercises is appropriate for use in both golf and tennis.
View details for DOI 10.1155/2016/3987486
View details for PubMedID 27403454
- Atlas of Ultrasound-Guided Musculoskeletal Injections McGraw Hill Education. 2013
- The Relationship between Golf Swing Trunk Rotation Biomechanics and Low Back Pain in Golfers Spineline 2013; Sep Oct: 21-26
- Preseason Training for Golfers with Low Back Pain Spineline 2012; Jan Feb: 17-21
Basic Appearance of Ultrasound Structures and Pitfalls
PHYSICAL MEDICINE AND REHABILITATION CLINICS OF NORTH AMERICA
2010; 21 (3): 461-?
The role of ultrasound in musculoskeletal imaging is expanding as technology advances and clinicians become better educated about its clinical applications. The main use of musculoskeletal ultrasound to physiatrists is to examine the soft tissues of the body and to diagnose pathologic changes. Ultrasound can be used to assist clinicians in performing interventional procedures. However, to successfully integrate this technology into their clinical practices, physicians must be familiar with the normal and abnormal appearance of tissues. They also must recognize the clinically relevant limitations and pitfalls associated with the use of ultrasound.
View details for DOI 10.1016/j.pmr.2010.04.002
View details for PubMedID 20797545