Advanced scores · General Knee

Knee Injury and Osteoarthritis Outcome Score (KOOS)

Comprehensive patient-reported outcome measure developed for younger, more active patients with knee injury who are at increased risk of developing OA. Includes WOMAC items as subscales.

42 questions
10-15 min
Score 0 to 100, higher is better
Gold Standard

All scores

About the KOOS

Who it is for

Patients with knee injuries (ACL, meniscus, cartilage) and those with early to moderate OA. Ideal for younger, active patients where sports function matters.

What it measures

Five separately scored subscales: Pain, other Symptoms, Function in daily living (ADL), Function in sport/recreation (Sport/Rec), and knee-related Quality of life (QOL). Provides multidimensional assessment.

Sections

Pain (9 items)
Symptoms (7 items)
ADL (17 items)
Sport/Rec (5 items)
QOL (4 items)

Reading your score

Each subscale scored 0-100, where 0 = extreme problems, 100 = no problems. Subscales reported separately, not summed.