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Knee
KOOS Knee Score Calculator
The Knee injury and Osteoarthritis Outcome Score (KOOS) is a questionnaire about how your knee has felt over the last week. Answer the questions below and your scores appear at the bottom of the page. Nothing you enter is saved or sent anywhere.
Your KOOS scores
0 of 42 questions answered
Each score runs from 0 to 100. A score of 100 means no knee problems and 0 means extreme knee problems. KOOS does not use a single total score, so the five areas are shown separately. A score is shown once at least all but two of the questions in that area are answered. If you take this before and after surgery, a change of about 8 to 10 points may represent a small but noticeable improvement.2 This is a patient-reported measure, not a diagnosis. Bring your results to your visit.
Sources
- Roos EM, Lohmander LS. The Knee injury and Osteoarthritis Outcome Score (KOOS): from joint injury to osteoarthritis. Health Qual Life Outcomes. 2003;1:64. Journal article. The KOOS is free to use; scoring follows the KOOS user’s guide (koos.nu).
- Roos EM, Toksvig-Larsen S. Knee injury and Osteoarthritis Outcome Score (KOOS) – validation and comparison to the WOMAC in total knee replacement. Health Qual Life Outcomes. 2003;1:17. Journal article
Book an appointment with Dr. Stepanyan.
Knee visits are available in Glendale, East LA and Santa Fe Springs. Most major insurance plans are accepted.
This calculator is for general information and does not replace an exam or a diagnosis. If you have sudden severe pain, numbness, a hot swollen joint with fever, or can't move a limb after an injury, seek urgent care. Last reviewed November 2026.