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(A) Hips without osteoarthritis. Differences in joint space width (JSW) (in mm) between standing and supine radiographs against the mean for hips without osteoarthritis. Limits of agreement correspond to mean ±2SD. (B) Hips with osteoarthritis. Differences in joint space width (JSW) (in mm) between standing and supine radiographs against the mean for hips with osteoarthritis. Limits of agreement correspond to mean ±2SD.
