Vascularized Iliac Bone-Grafting for Osteonecrosis with Segmental Collapse of the Femoral Head

BackgroundVascularized iliac bone-grafting has been reported to be successful for patients with osteonecrosis of the femoral head. However, its benefit in patients with segmental collapse of the femoral head has not been determined. The purpose of this study was to analyze the results of vascularized iliac grafting in osteonecrotic femoral heads with segmental collapse.MethodsWe retrospectively analyzed thirty-three hips in thirty-two patients in whom an osteonecrotic femoral head with segmental collapse (Association Research Circulation Osseous [ARCO] stage IIIA [