Fig. 1From: Mid- to long-term results of modified non-vascularized allogeneic fibula grafting combined with core decompression and bone grafting for early femoral head necrosisa The nonvascularized allogeneic fibula with 10 cm long and small holes on the surface. b Removed the dead bone through the decompression channel. c, d Diagrammatic drawing of the decompression channel. c Creating the decompression channel during the operation. d The channel has been built and an allogeneic fibula has been graftedBack to article page