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Kaj S. Emanuel serves as Assistant Professor in the Department of Orthopedic Surgery and Sports Medicine at Amsterdam UMC, part of the University of Amsterdam. He is affiliated with Amsterdam Movement Sciences in the programs Musculoskeletal Health and Tissue Function & Regeneration. His research centers on orthopedics, biomechanics, and mechanobiology, with a particular emphasis on musculoskeletal tissue degeneration and regeneration. Emanuel investigates the role of the infrapatellar fat pad as a source of biomarkers and therapeutic targets for knee osteoarthritis, exploring its lipid profiles and associations with disease progression. He has contributed to understanding pain mechanisms in osteochondral lesions of the talus through cross-sectional CT-based analyses and gait biomechanics studies in affected patients. Additional work includes evaluating complications of needle arthroscopy, statistical biases like regression to the mean in cartilage research, and surgical techniques such as Open Lift, Drill, Fill, and Fix (LDFF) and Talar OsteoPeriostic Grafting (TOPIC) for chronic talar lesions, reporting favorable two-year clinical outcomes.
Emanuel's publications include 'Infrapatellar fat pad as a source of biomarkers and therapeutic target for knee osteoarthritis' (2025, Arthritis Research & Therapy), 'Only Minor Complications Are Reported After Needle Arthroscopy: A Systematic Review' (2025, Arthroscopy, Sports Medicine, and Rehabilitation), 'Open Lift, Drill, Fill, and Fix (LDFF) for Chronic Osteochondral Lesions of the Talus: Favorable 2-Year Clinical Outcomes' (2025, Orthopaedic Journal of Sports Medicine), 'Talar OsteoPeriostic Grafting From the Iliac Crest (TOPIC): Prospective 2-Year Outcomes for Large Lateral Osteochondral Lesions of the Talus' (2025, Foot & Ankle International), and 'Regression to the Mean: Statistical Bias Can Mislead Interpretation in Cartilage and Osteoarthritis Clinics and Research' (2025, Cartilage). He serves on the editorial board of Cartilage and has been involved in grant-funded projects, including the State of the Cartilage (START) consortium awarded by ReumaNederland and NWO in 2024. Emanuel chaired the jury for the AMS Outstanding Paper Award in 2024. His research has garnered over 2,000 citations on Google Scholar.