Surgical hip dislocation for removal of intraarticular exostoses: report of two cases.

Exostoses or osteochondromas are the most common benign bone tumors in children. The proximal femur is affected in approximately 30% of individuals and may lead to growth disturbances, acetabular dysplasia, and possible subluxation. Intraarticular lesions may also occur but are rarer. We present 2 cases of intraarticular exostoses that were successfully treated by surgical dislocation of the hip and complete excision of the lesion. However, despite successful excision, both hips are still abnormal because of the long standing inherent growth disturbance and residual acetabular dysplasia and may still require further surgery.