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椎体常因结核、肿瘤等病变造成不同程度的缺损，从而影响脊柱的稳定性。究竟椎体缺损多少，才可能导致失衡，目前还不清楚。本文采用生物力学实验，用２具新鲜成人尸体（男性，年龄、身高和体型相似），将脊柱共制成１４个试件，甲尸脊柱切除每个试件中间部分椎体，乙尸椎体试件为完整椎体作为对照，所有试件做轴向压缩实验，测定荷载变化的数据。实验证明，椎体切除１／２时，抗压力明显降低，可见软骨断裂；椎体切除１／３时导致功能单位出现异常，使相邻椎体向后成角，或向前滑脱，丧失稳定性。
Vertebral often due to tuberculosis, tumors and other lesions caused by varying degrees of defect, thus affecting the stability of the spine. It is unclear exactly how many vertebral body defects can lead to imbalances. In this paper, biomechanical experiments were performed on 14 specimens of the spine with 2 fresh adult cadaveric (male, age, height and body shape). The vertebral body of the middle part of each specimen was excised from the cadaveric spine. The specimen is the complete vertebral body as a control, and all the specimens are subjected to axial compression test to determine the change of load. Experiments show that the vertebral resection of 1/2, the anti-stress decreased significantly, showing cartilage rupture; vertebral resection 1/3 resulted in abnormalities in functional units, the adjacent vertebral body angulation backward, or forward slippage, loss of stability Sex.