Factors Affecting Self-Reported Pain and Physical Function in Patients With Hip Osteoarthritis

Abstract Juhakoski R, Tenhonen S, Anttonen T, Kauppinen T, Arokoski JP. Factors affecting self-reported pain and physical function in patients with hip osteoarthritis. Objective To determine the factors associated with self-reported pain and physical function in patients with hip osteoarthritis (OA). Design Cross-sectional study. Setting Rehabilitation clinic in a Finnish hospital. Participants Participants with hip OA (N=118; 35 men, 83 women; age, 66.7±6.5y; range, 55–80y). Interventions Not applicable. Main Outcome Measures Self-reported pain and self-reported disease-specific physical function were recorded by using the Western Ontario McMaster Universities Osteoarthritis Index. Self-reported generic physical function was analyzed by using the Finnish version of the RAND 36-Item Short-Form Health Survey. As listed in the International Classification of Functioning, Disability and Health model, the effects of personal factors (age, sex, education, depression, life satisfaction, smoking, years of sporting activities), pathophysiologic factors (radiologic score of hip OA, body mass index [BMI], comorbidities, duration of knee pain) and body functions and structures (measurement of leg extensor power, passive internal rotation and flexion of the hip joint, the six-minute walk test [6MWT], Timed Up & Go [TUG] test, ten-meter walk test, sock test) were analyzed. Results The educational level ( r =−.264, P