Severe Growth Disturbance with Osteoid Osteoma

Two cases of osteoid osteoma of the femoral neck causing unusually severe bone and joint deformities are presented. The lesions existed for eight years by radiological evidence in one case and for seven years by history in the other. Localized hyperemia and muscle contractures over several years during the growth period are believed to cause the growth deformities. Early surgical excision is advised, not only to relieve the pain and prevent the contractures and deformities, but also to guard against the possibility of osteoarthritis later in life.