胸椎单侧关节突关节切除对稳定性影响的生物力学研究

选用5具新鲜成人尸体脊柱T4/5,T7/8及T11/12脊柱功能单位(FSU),分别切除T4/5,T7/8,T11/12节段的右侧关节突,分别造成3种实验模型(正常脊柱结构、右侧关节突切除外侧1/2,全切除),运用脊柱三维运动实验机测试各模型的稳定性.结果示下胸椎单侧关节突全部切除对脊柱旋转产生影响(P=0.000 755).在胸椎减压手术过程中手术需要保留下胸椎的关节突,如果需要切除时可以辅以内固定系统.

Biomechanics Test Results of Unilateral Facetectomy on Thoracic Spinal Stability

Use the vertebral column FSU T4/5,T7/8 and T11/12 function spinal unit(FSU) of 5 adult cadavers was used and facetectomy was performed on right articular process of the above FSU resulting in 0,1/2,total facetectomy of unilateral facets.The stability of each model was determined using three dimension movement test machine of vertebral column.In the lower region,the stability was disturbed(P=0.000 755)in the Levotorsion and Dextrotorsion,Facets are need to bepreserved in the thoracic decompression,but if it is to be dissected in the operation,the internal fixation systems are helpful.