四肢长骨骨折在法医检案中是较为常见的，对愈合后的肢体缩短或延长程度进行评定，以往在检验中常用传统的人体体表长度测量法和人体骨性长度测量法，此两方法难以准确反映实际长短，笔者采用一次投照双侧骨，即骨折侧骨和未骨折侧骨全长的X光片，后在片上测量确定肢体长短法， Long limb fractures in the forensic medical examination is more common in the healing of limb shortening or extension of the extent of the assessment in the past in the test commonly used in the human body surface length measurement method and the human body bony length measurement method, the two methods is difficult Accurately reflect the actual length, the author used a projection double-sided bone, that is, the fracture of the lateral and non-fractured bone full-length X-ray film, after the determination of the length of the film to determine the body length method,