Journal of pediatric orthopedics. Part B
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Pigmented villonodular synovitis is a rare condition in children. We report a case of a 7-year-old girl with pigmented villonodular synovitis in her left hip. The diagnosis was confirmed with an arthroscopic hip biopsy. ⋯ There was, however, joint space narrowing in the affected hip. In addition, there was early closure of the proximal femoral epiphysis in the affected limb, leading to a discrepancy in leg length. This case report suggests that pigmented villonodular synovitis should be considered in children with a painful hip.