1. To analyze the X - ray features of injured sacrum and coccyx fracture and avoid misdiagnosis or miss diagnosis. 目的:提高臀坐式外伤骶尾椎骨折的X线表现的认识,减少漏、误诊。2) Sacrum and coccyx photography 骶尾椎摄片3) sacral vertebrae 骶椎 1. Methods: 60 human adult sacrum specimens...