Sunnybrook Health Sciences Centre

Paul MarksMD, FRCSC

Orthopaedic Surgery

Arthroscopy & Sports Medicine, Shoulder & Knee

Dr. Marks has a special interest in sports medicine, arthroscopy and reconstruction of the shoulder and knee. His research activities involve imaging, biomechanics, ultrastructural morphology, and clinical aspects of the cruciate and meniscofemoral ligaments.

He holds grants from the Canadian Institutes of Health Research and the Canadian Arthritis Network for research in predicting factors for developing arthritis in the knee. He is part of the multidisciplinary team studying cytokine and biomarker imaging and outcome measures in patients at risk for developing arthritis.

Dr. Marks is also part of the ProKnee study, which is a multi-institutional research group that spans three Canadian cities: Toronto, Calgary and Montreal. The ProKnee study, the first of its kind in Canada, examines the relationship between risk factors and the progression of osteoarthritis after anterior cruciate ligament injury. Several assessment criteria are used, all of which rely on the meticulous reporting of clinical data from Dr. Marks’ practice. Particularly, mathematical and in vivo models of specific tissue deficits are constructed to approximate the lesions found in patients’ knees.

External Profiles

Ujash ShethMD, MSc, FRCSC

Orthopaedic Surgery

Dr. Sheth received his medical degree from Queen’s University and completed his residency in Orthopaedic Surgery at the University of Toronto. During his training he obtained his Master of Science (MSc) in Clinical Epidemiology from the Institute of Health Policy, Management and Evaluation (IHPME) through the Surgeon-Scientist Training Program. His thesis work on knowledge translation and the impact of randomized trials on surgeon practice patterns received national and international recognition, including the prestigious Herodicus Award in 2016.

Following completion of his residency training he pursued a fellowship in Sports Medicine and Arthroscopy at Northwestern University, in Chicago, IL, where he assisted in caring for amateur and professional athletes including the Chicago Blackhawks, Chicago Cubs and Northwestern Wildcats football team. He then returned to Toronto to complete a second fellowship in Upper Extremity Reconstruction and Orthopaedic Trauma at Sunnybrook Health Sciences Centre.

Dr. Sheth is a member of the University of Toronto’s Division of Orthopaedic Surgery as an Assistant Professor and Surgeon Investigator. His surgical practice focuses on upper extremity reconstruction and trauma with a special interest in arthroscopic treatment of shoulder, elbow and wrist pathology and open reconstructive procedures such as tendon transfers and shoulder/elbow replacements. His research interests include optimizing patient-reported and clinical outcomes following open and arthroscopic shoulder, elbow and wrist surgery.

Sebastian TomescuMD, FRCSC, MSc

Orthopaedic Surgeon

Lower Extremity Reconstruction

Dr. Tomescu completed his Orthopaedic Surgery Residency and a subsequent Clinical Fellowship at the University of Toronto. He was part of the distinguished Surgeon-Scientist Training Program (SSTP), and is currently completing a Masters program at the Institute of Medical Science, studying the effectiveness of functional knee braces after ACL injuries. His clinical practice focuses on lower extremity mal-alignment, osteotomies, patellar instability, and knee reconstructive surgery. Dr. Tomescu’s research interests include using biomechanical approaches to study risk factors for patellar instability, and using wearable technology solutions to enhance post-surgical recovery.

External Profiles

David WassersteinMD, FRCSC, MSc, MPH(c)

Orthopaedic Surgery

Sports Medicine Specialist

David graduated from the University of Toronto medical school and Orthopaedic Surgery residency program. He has an MSc in basic science and a Masters in Public Health (2016 University of Waterloo) with a focus on epidemiology and injury prevention. David’s Orthopaedic subspecialty training is in sports medicine, and includes two fellowships – one at the University of Toronto Orthopaedic Sports Medicine program (2012-13), and a second with the Sports Medicine and Shoulder service at Vanderbilt University in Nashville, Tennessee (2013- 14).

David’s clinical practice includes lower extremity soft-tissue trauma and reconstruction, with a focus on knee and foot/ankle. He is a principle member of the Joseph Schatzker Knee Preservation unit with expertise in knee reconstruction, osteotomy/realignment and cartilage restoration.

David’s research interests includes understanding the natural history and biomechanics of soft-tissue injuries and identifying which patients benefit most from early surgical intervention. He is the principle investigator for multiple research grants.