人体肋骨不同于其它骨骼，它不仅扁、细、长，而且呈弧形，在人体从后上向前下方走行。 在后前位Ｘ线胸片中，可在一定程度上显示肋骨骨折及助骨肿瘤的破坏情况。但因肋骨呈弧形，所以在肋骨返折处的不全骨折经常会遗漏；同时，由于锁骨、纵隔及脊柱的重叠，且肋软骨本身对比度 Human skeleton is different from other bones, it is not only flat, thin, long, but also curved in the human body from the front to the bottom of the walk. In the post X-ray chest, to a certain extent, shows the fracture of the ribs and bone destruction of bone tumors. However, due to the arched ribs, incomplete replacement of the ribs at the fracture often missed; the same time, due to the overlap of the clavicle, mediastinum and spine, and costal cartilage itself contrast