Figure 3

One patient with a one-level degenerative spondylolisthesis at L4–L5. (a, b) The preoperative anteroposterior (AP) and lateral radiographs of a 54-year-old woman with lumbar degenerative spondylolisthesis at L4–L5 who had severe claudicant sciatica and back pain. (c, d) Immediately after reduction surgery using lever slip reduction maneuver technique with polyaxial screw and rod fixation system through a single posterior surgical approach, AP and lateral views showed that the slip correction was 99.81%. The slip angle and the lumbar lordosis improved from 7.27° and 36° preoperation to 2.74° and 40°, respectively. (e, f) At more than 5 years follow-up, the slip correction, the slip angle, and the lumbar lordosis was 99.66%, 4.36° and 38°, respectively.