Postoperative Changes in Pelvic Parameters and Sagittal Balance in Adult Isthmic Spondylolisthesis

Abstract

Surgical correction of adult isthmic spondylolisthesis with posterior lumbar interbody fusion and posterior instrumentation resulted in improvement of sacral slope, pelvic tilt, LL, and sagittal balance. Only restoration of the HOD was significantly correlated with improvement of LL and sagittal balance. Therefore we presume it is important to restore the HOD in surgical correction of adult isthmic spondylolisthesis.