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Does Back Pain Improve Following Lumbar Decompression Alone?

David J Mazur-Hart1, Christian G Lopez Ramos1, Joseph G Nugent1

  • 1Department of Neurological Surgery.

Clinical Spine Surgery
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Summary
This summary is machine-generated.

Most patients with lumbar spinal stenosis (LSS) experience improved low back pain (LBP) after decompression surgery. Higher preoperative pain and disability predict better outcomes, suggesting LBP is not a contraindication for LSS decompression.

Keywords:
back paindecompressionlumbar spinenomogramspinal stenosisspine surgery

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Area of Science:

  • Neurosurgery
  • Orthopedics
  • Spinal Surgery

Background:

  • Low back pain (LBP) is a common symptom in degenerative lumbar spine disease.
  • LBP is often considered a contraindication for spinal decompression surgery.
  • Patients with lumbar spinal stenosis (LSS) undergoing decompression for neurogenic claudication or radiculopathy sometimes report LBP improvement.

Purpose of the Study:

  • To determine if LBP improves after decompression surgery for LSS.
  • To identify preoperative predictors of LBP improvement using LASSO methodology.
  • To develop a pilot nomogram for clinical guidance and setting patient expectations.

Main Methods:

  • Retrospective cohort study of 176 patients undergoing decompressive surgery without fusion for LSS (2017-2020).
  • Exclusion criteria included tumor, infection, prior fusion, or incomplete questionnaires.
  • Analysis of patient-reported outcome measures (PROMs), clinical, and radiographic variables; comparison of patients achieving minimal clinically important difference (MCID) in LBP versus those who did not at 12 months.
  • Least Absolute Shrinkage and Selection Operator (LASSO) methodology used for predictive variable identification.

Main Results:

  • 61.9% of patients (n=109) achieved MCID for back pain at 12 months.
  • Patients who improved in back pain had significantly higher preoperative pain scores and disability.
  • Machine learning identified age, BMI, VAS-B, ODI, EQ-5D, PROMIS-P, PROMIS-M, and CCI as predictors of improvement (AUROC=0.832).

Conclusions:

  • A majority of patients experience significant LBP improvement following decompression for LSS.
  • Elevated preoperative pain and disability are associated with better LBP outcomes post-decompression.
  • LBP should not be a contraindication for decompression without fusion; a predictive nomogram can aid preoperative counseling.