脊柱后方结构在腰椎退变疾患中的作用

Roles of posterior structure of spine in degenerative lumbar disorders

目的 研究脊椎后方结构在腰椎退变疾患中的作用。方法 33例退行性腰椎滑脱 (DS) ,36例腰椎峡部不连滑脱 (IS) ,30例腰椎间盘突出 (LDH) ,采用X线片测量椎间盘高度比 ,CT片测量小关节角和小关节横径 ,并作组间比较。结果 与IS和LDH组相比 ,DS组小关节角偏矢状位 ,关节横径和椎间盘高度比减少。IS参数与LDH相似。

Objective To study the roles of posterior spinal structure in the etiology of degenerative lumbar disorders. Methods 33 degenerative spondylolisthesis (DS), 36 isthmic spondylolysis (IS) and 30 lumbar disc herniated (LDH) were measured of disc height ratio by radiographs and facet joint orientation and transverse articular dimenson by computed tomographic scans. Results At a significantly more sagittal facet orientation, decrease in disc height ratio and transverse articular dimension were found in the DS when compared to IS and LDH. IS reference was similar to that of LDH. Conclusion The shape of facet joint plays an important role in the pathoanatomic mechanisms of DS.