Knee injury and Osteoarthritis Outcome Score (KOOS) - validation of a Swedish version


  • Swedish, American-English and Danish versions of the KOOS are available from the first author. A Norwegian version is pending.

  • Grants were obtained from The Medical Faculty and University Hospital in Lund, The Swedish Foundation for Health Care Sciences and Allergy Research, The Swedish Rheumatism Association, The Swedish Sports Confederation (Sports Research Council), The Zoega Foundation, and the Swedish Medical Research Council.

Ewa Roos, Department of Physical Therapy, Box 5134, S-220 05 Lund, Sweden


The Knee injury and Osteoarthritis Outcome Score (KOOS) is a self-administered instrument measuring outcome after knee injury at impairment, disability, and handicap level in five subscales. Reliability, validity, and responsiveness of a Swedish version was assessed in 142 patients who underwent arthroscopy because of injury to the menisci, anterior cruciate ligament, or cartilage of the knee. The clinimetric properties were found to be good and comparable to the American version of the KOOS. Comparison to the Short Form-36 and the Lysholm knee scoring scale revealed expected correlations and construct validity. Item by item, symptoms and functional limitations were compared between diagnostic groups. High responsiveness was found three months after arthroscopic partial meniscectomy for all subscales but Activities of Daily Living.