The WOMAC has 3 subscales: function (17 questions), pain (5 questions), and stiffness (2 questions).
energy level (EL): three questions pain (P): eight questions emotional reaction (ER): nine questions sleep (S): five questions social isolation (SI): five questions physical abilities (PA): eight questions.
The five WOMAC pain questions related to knee OA were clinically constructed in three weight-bearing pain questions (pain on climbing stairs, on walking, and on standing) and two non-weight-bearing pain questions (pain in bed or when sitting/lying down) as suggested by a recent study [ 16].
The eight subscales are: Physical functioning (10 questions), Role physical (4 questions), Role emotional (3 questions) Pain (2 questions), Vitality (4 questions) General health (5 questions), Social functioning (2 questions), and Mental health (5 questions).
It computes 38 statements divided into 6 categories: energy (3 questions), pain (8 questions), emotional reaction (9 questions), sleep (5 questions), social isolation (5 questions) and physical mobility (8 questions).
Physical component is assessed through four dimensions: physical functioning (10 questions), role-physical (4 questions), bodily pain (2 questions), and general health (5 questions).
The WOMAC has 24 items that represent 3 subscales (function 17 questions, stiffness 2 questions and pain 5 questions).
Five questions representing pain, two questions representing stiffness and 17 questions representing function.
Based on these question a pain score can be calculated ranging from 0 (no pain) to 100 (severe, debilitating pain).
The biggest question of pain research is whether this pathological cortical reorganization can be undone.
