Abstract
We investigated the correlation between sagittal spinal alignment and clinical symptoms in lumbar canal stenosis. Whether the presence of cauda equina intermittent claudication or not, the ninety three patients except combined type were classified into two groups (cauda equina group and radicular group) and we compared the results of lumbosacral and pelvic alignment in the two groups. We used the parameters of distance B (the distance between C7 plumb line and the posterior superior corner of S1), lumbar lordotic angle (LLA) and pervic angle (PA) on standing lateral radiographs. The averaged values of distance B, PA, LLA were as follows: cauda equina group 57.6 mm, 27.2°and 18.8°, radicular group 40.3 mm, 22.7°and 22.4°.In cauda equina group, the both of distance B and PA were larger than radicular group. LLA was smaller in cauda equina group. Sagittal spinal alignment of cauda equina group might be posterior tilt of pelvis and trunk forward shift in compared with radicular group.
