Study Finds KOOS Scales Valid, Responsive for TKR Patients
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The KOOS was valid and responsive for patients with knee osteoarthritis who underwent total knee replacement, according to results of a recently published study.
Barbara Gandek, PhD, in the Department of Quantitative Health Sciences at the University of Massachusetts Medical School, and colleagues assessed pre-total knee replacement (TKR) data and 6-month post-TKR data of 1,143 patients to compare the KOOS in relation to the WOMAC and the SF-36 health survey.
Researchers found the KOOS was worse for patients with an assistive device; although, the scores only declined weakly with increasing comorbidity. KOOS quality of life (QoL) scores were better than all measures except for SF-36 physical component summary in distinguishing between groups who were better, the same, or worse after surgery. KOOS QoL scores had the highest effect size and the SF-36 had a lower standardized response mean. KOOS pain and symptom scales were better at discriminating between better, same or worse groups than WOMAC pain and stiffness scales.
The researchers wrote the KOOS QoL scale should be considered as an outcome measure in the CMS Comprehensive Care for Joint Replacement model. – by Will Offit
Disclosure: The researchers report no relevant financial disclosures.