Failed vascularized fibular graft in treatment of osteonecrosis of the femoral head. A histopathological analysis.

Purpose: vascularized fibular grafting has been used to treat osteonecrosis of the femoral head in younger patients. Although the results described in the literature are promising, the failure rate is still significant, especially in steroid users. This study was undertaken to learn more, on a histopathological level, about the mechanism of vascularized fibular graft failure.