This 1998 paper by Roos et al. describes the development and initial validation of the KOOS, a 42-item self-administered questionnaire for assessing patient-relevant outcomes after knee injury. It covers five separately scored dimensions: pain, symptoms, ADL, sport/recreation, and knee-related QOL. The instrument was tested for reliability, construct validity, and responsiveness in 21 patients undergoing ACL reconstruction.
This 1998 paper by Roos et al. describes the development and initial validation of the KOOS, a 42-item self-administered questionnaire for assessing patient-relevant outcomes after knee injury. It covers five separately scored dimensions: pain, symptoms, ADL, sport/recreation, and knee-related QOL. The instrument was tested for reliability, construct validity, and responsiveness in 21 patients undergoing ACL reconstruction.