WOMAC Score Calculator

The WOMAC is the standard outcome measure for hip and knee osteoarthritis in physiotherapy. It assesses three domains: pain, stiffness, and physical function.

Clinical Applications

• Baseline and follow-up assessment in knee and hip osteoarthritis — primary outcome measure in most OA clinical trials
• Evaluating response to physiotherapy, hydrotherapy, and exercise-based interventions
• Pre- and post-operative measurement for total knee and hip replacement surgery
• Informing decisions around activity modification, orthotic prescription, and graded exercise progression

How to Interpret Results

• A 10-point improvement in WOMAC total score represents the MCID — this guides decisions about whether a treatment is clinically meaningful
• The Function subscale (0–68) carries the most weight — deficits here strongly correlate with reduced quality of life and functional limitation
• WOMAC results should be combined with objective measures (gait speed, TUG, chair stand tests) for a complete functional picture

1. 1.Bellamy N et al. (1988). Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes. Journal of Rheumatology, 15(12), 1833–1840.
2. 2.McConnell S, Kolopack P, Davis AM (2001). The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC): a review of its utility and measurement properties. Arthritis & Rheumatism, 45(5), 453–461.
3. 3.Roos EM, Lohmander LS (2003). The Knee injury and Osteoarthritis Outcome Score (KOOS): from joint injury to osteoarthritis. Health and Quality of Life Outcomes, 1, 64.