RESULTS: Pre-operative hip and knee ROM correlated weakly with self-report activity limitations (0.11 to 0.43), observed activity limitations (0.09 to 0.39) and self-report participation restrictions (-0.32 to 0.06). In comparison to ROM, correlations between joint pain and self-report activity limitations and participation restrictions were consistently moderate-high (-0.53 to 0.80). However, patients with restricted knee joint flexion (