Objective:To induce the specimen of ischemic necrosis in adult rabbits femoral head and to develop a satisfied animal model for clinical and experimental study.Methods:34 adult China white rabbits were divided into 4 groups.In group A,10 rabbits were given endotoxin from Escherichia intravenously 2 times at an interval of 24 hours.In group B,10 rabbits were given endotoxin as in group A and were injected intramuscularly with methylprednisolone 3 times at intervals of 24 hours after the second injection of e...