KOOS - Knee injury and Osteoarthritis Outcome Score

The Knee injury and Osteoarthritis Outcome Score (KOOS) is a patient-reported outcome measure designed to assess the patient's opinion about their knee and associated problems. It evaluates five dimensions: Pain, Symptoms, Activities of Daily Living, Sport and Recreation Function, and Quality of Life.

Instructions:

The KOOS takes approximately 10 minutes to complete and should be self-administered. Patients should answer based on their experiences over the past week. The questionnaire can be completed on paper, electronically, or via interview. All 42 items should be completed for valid subscale scoring, though missing data can be handled if >50% of items in a subscale are answered. Patients should be instructed to give their best answer even if they did not perform certain activities in the past week.

Symptoms

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Pain

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Function, Daily Living

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Function, Sports and Recreational Activities

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Quality of Life

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Patient Watch Form - 10/31/2025