A novel approach to sagittal balance restoration following iatrogenic sacral fracture and resulting sacral kyphotic deformity. Technical note

J Neurosurg Spine. 2007 Apr;6(4):368-72. doi: 10.3171/spi.2007.6.4.15.

Abstract

The authors describe the use of sacral pedicle subtraction osteotomy (PSO) with multiple sacral alar osteotomies for the correction of sacral kyphosis and pelvic incidence and for achieving sagittal balance correction in cases of fixed sagittal deformity after a sacral fracture. In this paper, the authors report on a novel technique using a series of sacral osteotomies and a sacral PSO to correct a fixed sagittal deformity in a patient with a sacral fracture that had healed in a kyphotic position. The patient sustained this fracture after a previous surgery for multilevel instrumented fusion. Preoperative and postoperative radiographic studies are reviewed and the clinical course and outcome are presented. Experts agree that the pelvic incidence is a fixed parameter that dictates the morphological characteristics of the pelvis and affects spinopelvic orientation and sagittal spinal alignment. An increased pelvic incidence is associated with a higher degree of spondylolisthesis in the lumbosacral junction, and increased shear forces across this junction. The authors demonstrate that the pelvic incidence can be altered and corrected with a series of sacral osteotomies to improve sacral kyphosis, compensatory lumbar hyperlordosis, and sagittal balance.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't
  • Technical Report

MeSH terms

  • Female
  • Humans
  • Kyphosis / diagnostic imaging
  • Kyphosis / etiology
  • Kyphosis / surgery*
  • Middle Aged
  • Osteotomy / methods*
  • Pain, Postoperative / diagnostic imaging
  • Pain, Postoperative / etiology
  • Pain, Postoperative / surgery
  • Pelvis / diagnostic imaging
  • Postural Balance
  • Radiography
  • Recovery of Function
  • Reoperation
  • Sacrum / diagnostic imaging
  • Sacrum / injuries*
  • Spinal Fractures / diagnostic imaging
  • Spinal Fractures / etiology
  • Spinal Fractures / surgery*
  • Spinal Fusion / adverse effects*