Knee X-rays were taken of
both knees with 15° of fixed knee flexion, and pelvic
radiographs with both feet in 10° internal rotation. Films
were scored individually for osteophytes and joint space
narrowing (JSN) on a scale of 0–3 (where 0 = no disease
and 3 = most severe disease) according to the Osteoarthritis
Research Society International (OARSI) atlas[14] as
previously described