Shepherd's crook deformity with an intracapsular femoral neck fracture in fibrous dysplasia.

A shepherd's crook deformity with an intracapsular femoral neck fracture in the fibrous dysplasia of a 19-year-old woman is reported. The deformity and fracture were treated by bone grafting using a single fibula through the femoral neck to its head, and corrective valgus osteotomy. Blood flow measurement using electrochemically generated hydrogen clearance was useful in evaluating avascular necrosis of the femoral head affected by tumorous tissue. Osteosynthesis combined with a fibular graft, and corrective valgus osteotomy after proper evaluation of the blood flow in the femoral head, is a reliable procedure for the treatment of shepherd's crook deformity associated with an intracapsular femoral neck fracture.