Results of Treatment for Aseptic Necrosis of the Femoral Head with Vascularized Bone Graft.

概要

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Avascular necrosis of the femoral head was treated with vascularized bone graft fn 7 adults (9 hips). They were followed clinically for 8-50 months (mean, 35 months). Their preoperative stages were classified. Radiographically, 7 hips were at stage II and 2 were at stage III. To compare the clinical results and preoperative Magnetic Resonance Imaging, T1 weighted images were classified into 3 patterns according to the modified Totty's classification. 6 hips were classified into band like pattern and 3 inhomogenous pattern. 6 hips showed good results. All of them were at stage II band like pattern. On the other hand, 3 hips showed poor results. On of them was at stage II and inhomogenous pattern. The other 2 were at stage III and inhomogenous pattern. This suggests that this operation should be offered to the hip with stage II and band like pattern on MRI.