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Mean values of SF-36 subscales preoperatively and six and 12 months postoperatively for patients with moderate (grade 2) (n=47) and severe (grade 3) (n=113) radiographic OA. The scale is 0-100, worst to best. PF = physical function; RP = role function physical; BP = bodily pain; GH = general health; VT = vitality; SF = social function; RE = role function emotional; MH = mental health.
