Free online KOOS survey score calculator

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About the score:

Originally published in 1998 in The Journal of Orthopaedic and Sports Physical Therapy, the Knee injury and Osteoarthritis Outcome Score (KOOS) assesses patient pain (9 items), other symptoms (7 items), function in daily living (17 items), function in sport and recreation (5 items), and knee related quality of life (4 items). Scores range from 0 to 100 with a score of 0 indicating the worst possible knee symptoms and 100 indicating no knee symptoms. The KOOS is a patient reported joint-specific score, which may be useful for assessing changes in knee pathology over time, with or without treatment.

Original Literature:

Roos, Ewa M., et al. “Knee Injury and Osteoarthritis Outcome Score (KOOS)—development of a self-administered outcome measure.” Journal of Orthopaedic & Sports Physical Therapy28.2 (1998): 88-96.

Validation Literature:

Roos, Ewa M., and Sören Toksvig-Larsen. “Knee injury and Osteoarthritis Outcome Score (KOOS)–validation and comparison to the WOMAC in total knee replacement.” Health and quality of life outcomes 1.1 (2003): 17.

Additional Literature:

Wang, Dean, et al. “Patient-reported outcome measures for the knee.” The journal of knee surgery 23.03 (2010): 137-151.

About the score developer:

Dr. Bruce D. Beynnon, PhD is the McClure Professor of Musculoskeletal Research at the University of Vermont.

To view his publications, please visit PubMed.