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Related Experiment Videos

Associations between spinal deformity and outcomes after decompression for spinal stenosis

D D Frazier1, S J Lipson, A H Fossel

  • 1Department of Orthopedic Surgery, Beth Israel Hospital, Boston, Massachusetts, USA.

Spine
|October 27, 1997
PubMed
Summary

Preoperative scoliosis correlates with poorer outcomes for spinal stenosis surgery. However, an increase in olisthesis after surgery for spinal stenosis appears well-tolerated, with a trend toward better results.

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Area of Science:

  • Orthopedics
  • Neurosurgery
  • Radiology

Background:

  • Preoperative degenerative scoliosis is often linked to unfavorable outcomes in spinal stenosis surgery.
  • Limited and conflicting data exist regarding the impact of increased olisthesis post-laminectomy on surgical outcomes for spinal stenosis.

Purpose of the Study:

  • To investigate the association between radiographic parameters, specifically scoliosis and olisthesis, and surgical outcomes in patients with degenerative spinal stenosis.

Main Methods:

  • A prospective observational study involving 90 patients undergoing surgery for degenerative spinal stenosis.
  • Radiographs were analyzed pre- and post-surgery for scoliosis and changes in olisthesis by blinded reviewers.
  • Patient-reported outcomes, including pain, walking capacity, and satisfaction, were collected via questionnaires and analyzed using correlation and regression models.

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Main Results:

  • Preoperative scoliosis was associated with less improvement in back pain at 6 and 24 months post-surgery.
  • An increase in olisthesis post-surgery showed a trend towards greater improvement in lower extremity pain and walking capacity.
  • Multivariable analysis indicated no significant association between increased olisthesis and improved outcomes when controlling for confounders.

Conclusions:

  • Preoperative scoliosis is associated with less favorable outcomes after decompression for degenerative lumbar spinal stenosis.
  • Increases in olisthesis following surgery for spinal stenosis are generally well-tolerated and do not appear to lead to unfavorable results.
  • Minor post-operative olisthesis increases may even correlate with a trend toward better patient outcomes.