Western Ontario and McMaster Universities Osteoarthritis Index Version 3.1 Visual Analog Scale Format Questionnaire

**Semantic type:** Intellectual Product

**Definition:** A standardized rating scale developed by Nicholas Bellamy with the Western Ontario and McMaster Universities in 1982, which is used to assess pain, stiffness, and physical function in patients with hip and/or knee osteoarthritis. The questionnaire contains 24 items which are divided into 3 subscales: pain, stiffness and physical function. This version of the questionnaire uses the 100mm visual analog scaling format.

**Synonyms:** - WOMAC Index Version 3.1 Visual Analog Scale Format - WOMAC VA 3.1 INDEX - WOMAC3