Vehniah K. Tjong, MD
Orthopaedic Sports Medicine and Arthroscopy
Assistant Professor, Northwestern University
Team Physician, Northwestern University and United States Soccer Women’s National Team
Chicago, Illinois
Dr. Tjong is a dual-board certified (Canada & US) orthopaedic surgeon specializing in sports medicine with a clinical interest in hip and knee arthroscopy. Born in Windsor, Ontario, Canada, she received her Bachelor’s of Science in Engineering Chemistry from Queen’s University. After working for Ford Motor Company, she completed her Doctor of Medicine from the University of Toronto where she also finished orthopaedic residency training at the same institution under the Competency Based Curriculum. Dr. Tjong then crossed the border and pursued her sports medicine fellowship training at Northwestern University, and has since remained on faculty there at the Feinberg School of Medicine in Chicago. She is currently the Team Physician for Northwestern University varsity athletics and the US Soccer Women’s National Team. Dr. Tjong has research interests in qualitative methodology with a special interest in return to sport, patient reported outcomes, and opioid pain management. Additionally, she serves on the AAOS International Committee and Editorial Boards for the American Journal of Sports Medicine, Video Journal of Sports Medicine, and Arthroscopy: The Journal of Arthroscopy and Related Surgery as well as an active reviewer for the Orthopaedic Journal of Sports Medicine, Journal of Sports Health, and Knee Surgery, Sports Traumatology, Arthroscopy.
Selected Published Work
Goedderz C, Plantz M, Gerlach E, Arpey N, Swiatek P, Cantrell C, Terry MA, Tjong VK. Determining the Incidence and Risk Factors for Short-Term Complications following Distal Biceps Tendon Rupture Repairs. Clinics in Shoulder & Elbow. March 2022. PMID: 35045595.
Dayton SR, Krautmann KM, Boctor M, Tjong VK, Kadakia AR. Homolateral Lisfranc Fracture/Dislocation of 1st – 5th Metatarsals in a Collegiate Quarterback: A case study. Foot & Ankle Orthopaedics. January 2022. PMID: 35097664.
Plantz MA, Gerlach E, Carney J, Swiatek P, Cantrell C, Tjong VK. Revision ACL reconstruction has higher incidence of 30-day hospital readmission, reoperation, and surgical complications relative to primary procedures. Journal of Knee Surgery, Sports Traumatology, and Arthroscopy. July 2021. PMID: 34279703.
Awender JF, Lawton CD, Jenkins TJ, Butler BA, Selley RS, Tjong VK, Terry MA, Hsu WK. A Current Update on Pelvifemoral Conditions That Should be in the Differential Diagnosis for Patients With Lower Extremity Radiculopathy. Clinical Spine Surgery. June 2021. PMID: 34121075.
Hartwell MJ, Morgan AM, Nelson PA, Fernandez CE, Nicolay RW, Sheth U, Tjong VK, Terry MA. Isolated Acetabuloplasty for Femoroacetabular Impingment: Favorable Patient Reported Outcomes and Sustained Survivorship at Minimum 5-year Follow-up. Arthroscopy: The Journal of Arthroscopic & Related Surgery. April 2021. PMID 33878420.
Hartwell MJ, Selley RS, Alvandi BA, Dayton SR, Terry MA, Tjong VK. Reduced Opioid Prescription After Anterior Cruciate Ligament Reconstruction Does Not Affect Postoperative Pain or Prescription Refills: A Prospective, Surgeon-Blinded, Randomized, Controlled Trial. Arthroscopy, Sports Medicine & Rehabilitation. PMID: 34195628. April 2021.
Rosenberg SI, Padanilam SJ, Pagni BA, Tjong VK, Terry MA, Sheth U. A Lower Instability Severity Index Score Threshold May Better Predict Recurrent Anterior Shoulder Instability After Arthroscopic Bankart Repair: A Systematic Review. Journal of ISAKOS. February 2021.
Baker HP, Volchenko E, Rossi D, Dayton SR, Tjong VK. Analysis of NFL Preseason Injuries Resulting in Roster Cuts. Current Orthopaedic Practice. January 2021.
Selley RS, Hartwell M, Alvandi BA, Terry MA, Tjong VK. Risk Factors for Increased Consumption of Narcotics After Hip Arthroscopy: A Prospective, Randomized Control Trial. Journal of American Association of Orthopaedic Surgery. 2020 November 26. PMID: 33252549.
Hartwell MJ, Selley RS, Terry MA, Tjong VK. Can We Eliminate Opioid Medications for Postoperative Pain Control?: A Prospective, Surgeon Blinded, Randomized Control Trial in Knee Arthroscopy. American Journal of Sports Medicine. 2020 September; 48(11):2711-2717. PMID: 32755488.
Kyhos J, Johnson DJ, Alvandi B, Terry MA, Tjong VK. Multi-ligament Reconstructions as a Risk Factor for Adverse Outcomes in Arthroscopic Surgery. Journal of Knee Surgery, Sports Traumatology, and Arthroscopy. 2020 September 9. PMID: 32902685.
Sheth U, Mehta MP, Huyke F, Terry MA, Tjong VK. Opioid Prescribing Patterns and Patient Use for Common Sports Medicine Procedures: A Systematic Review. Sports Health. May/June 2020. PMID: 32271136.
Tjong VK, Murnaghan ML, Nyhof-Young JM, Ogilvie-Harris DJ. A Qualitative Investigation of Factors Affecting the Decision to Return to Sport after Anterior Cruciate Ligament Reconstruction. American Journal of Sports Medicine. 2014 Feb;42(2):336-42. PMID: 24197615.
Kristin Sainani, MD
Professor, Stanford University
Stanford, California
Kristin Sainani (née Cobb) is a professor at Stanford University. She teaches statistics and writing; works on statistical projects in sports medicine; and writes about health, science and statistics for a range of audiences. She authored the health column Body News for Allure magazine for a decade. She is the statistical editor for the journal Physical Medicine & Rehabilitation; and has authored a statistics column, Statistically Speaking, for this journal since 2009. She is also the associate editor for statistics at Medicine & Science in Sports & Exercise; an associate editor at the American Journal of Sports Medicine; and a member of the Statistics and Research Design Advisory Group at the Journal of Sports Science. She teaches the popular Massive Open Online Course (MOOC) Writing in the Sciences on Coursera, and also offers an online medical statistics certificate program through the Stanford Center for Professional Development. She was the recipient of the 2018 Biosciences Award for Excellence in Graduate Teaching at Stanford University.
Selected Published Work
Sainani KL, Chamari K. Wish List for Improving the Quality of Statistics in Sport Science. IJSPP. 2022. Advance online publication. https://doi.org/10.1123/ijspp.2022-0023.
Roche M, Sainani KL, Noordsy D, Fredericson M. Impacts of COVID-19 on Mental Health and Training in US Professional Endurance Athletes. Clin J Sport Med. 2021 Oct 27. doi: 10.1097/JSM.0000000000000983. Epub ahead of print. PMID: 34711711.
Sainani KL, Borg DN, Caldwell AR, et al. Call to increase statistical collaboration in sports science, sport and exercise medicine and sports physiotherapy British Journal of Sports Medicine 2021; 55: 118-122.
Sainani KL. Multinomial and ordinal logistic regression. PM&R. 2021;13:1050-5.
Sainani KL. How to Be a Statistical Detective. PM&R. 2020; 12: 211-215.
Sainani KL, Lohse KR, Jones PR, Vickers A. Magnitude-Based Inference is Not Bayesian and is Not a Valid Method of Inference. Scand J Med Sci Sports. 2019;29:1428-36.
Kraus E, Tenforde AS, Nattiv A, Sainani KL, Kussman A, Deakins-Roche M, Singh S, Kim BY, Barrack M, Fredericson M. Bone stress injuries in male distance runners: higher modified Female Athlete Triad Risk Assessment scores predict injury. Br J Sports Med. 2019;53:237-242.
Sainani KL. The Problem with “Magnitude-Based Inference.” Med Sci Sports Exerc. 2018;50:2166-2176.
Sainani KL. A Checklist for Analyzing Data. PM&R. 2018;10:963-965.
Tenforde AS, Carlson JL, Chang A, Sainani KL, Shultz R, Kim JH, Cutti P, Golden NH, Fredericson M. Association of the Female Athlete Triad Risk Assessment Stratification to the Development of Bone Stress Injuries in Collegiate Athletes. Am J Sports Med. 2017;45:302-310.
Tenforde AS, Fredericson M, Sayres LC, Cutti P, Sainani KL. Identifying sex-specific risk factors for low bone mineral density in adolescent runners. Am J Sports Med. 2015;43:1494-504.
Sainani KL. Introduction to principal components analysis. PM&R. 2014;6:275-8.
Sainani KL. The importance of accounting for correlated observations. PM&R. 2010;2:858-61.
Sainani KL. The problem of multiple testing. PM&R 2009; 1: 1098-103.
Cobb KL, Bachrach, LK, Greendale G, Marcus R, Neer R, Nieves J, Sowers MF, Brown BW, Gopalakrishnan G, Luetters C, Tanner HK, Ward B, Kelsey JL. Disordered eating, menstrual irregularity, and bone mineral density in female distance runners. Med Sci Sport Exerc. 2003; 35:711-719.
American Journal of Sports Medicine Editorial Board Spotlight 