Comparison of sagittal spino-pelvic morphology and life quality between degenerative and isthmic lumbar spondylolisthesis patients

Wang Pu; Meng Xiang-lu; Wang Jian-dong; Ma Hai-chao

doi:10.3969/j.issn.2095-4344.2016.22.018

Abstract：BACKGROUND:Due to different pathogenesis of degenerative and isthmic lumbar spondylolisthesis, the differences in sagittal spino-pelvic morphology and life quality between them are stil unclear. <br> OBJECTIVE:To investigate the differences in sagittal spino-pelvic morphology and life quality between degenerative and adult isthmic lumbar spondylolisis patients. <br> METHODS:From May 2012 to February 2015, 169 lumbar spondylolisthesis patients with complete imaging data were included in the study. Degenerative group contained 83 patients, and isthmic group contained 86 patients. The folowing radiographical parameters were measured on standard standing lateral radiographs of the entire spine, including thoracic kyphosis, lumbar lordosis, sagittal vertical axis, pelvic incidence, pelvic tilt and sacral slope. Meanwhile, slippage angle, slippage percentage and slippage distance ofal patients were also measured. SF-36 scale was employed to evaluate life quality, which was compared between groups. <br> RESULTS AND CONCLUSION:(1)Lumbar lordosis, thoracic kyphosis and slippage angle were significantly lower in the degenerative group than those in the isthmic group (P< 0.05-0.01). The sagittal vertical axis in degenerative group was higher than that in isthmic group (P< 0.01). (2) With respect to the domains of SF-36 scale, degenerative group had lower physical functioning score and social functioning score compared with the isthmic group (P< 0.01). (3) Pelvic incidence, pelvic tilt, sacral slope, slippage percentage and slippage distance showed no significant difference between two groups (P> 0.05). (4) Results suggested that pelvicmorphology between the degenerative and isthmic lumbar spondylolisthesis was similar. Compared with degenerative lumbar spondylolisthesis, isthmic spondylolisthesis patients have higher thoracic kyphosis, lumbar lordosis and slippage angle. In addition, notable limitations of physical functioning and social functioning were found in degenerative lumbar spondylolisthesis patients.