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Hip motion changes in hemophilia.

We reviewed early and late motion changes of the hip in 102 hemophiliacs with a mean follow-up of 7 years. Sixty patients (59%) had at least one hip bleed. Sixty-four hips in 49 patients demonstrated at least a 15 degree change in range of motion (ROM) at some time. At final review, only 34 of these 64 hips (53%) lost motion. Patients whose hips lost motion were just as likely to report hip bleeds as those who lost no motion. Twenty hips examined within 2 months of bleeding lost significant motion, but most motion returned within a year. The relationship between hip girdle bleeding and ROM remains obscure.