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A Simple Preoperative Score Predicting Failure Following Decompression Surgery for Degenerative Lumbar Spinal
Dimitris Dimitriou1, Elin Winkler, Sabrina Weber
1Department of Orthopedics, Balgrist University Hospital, University of Zürich, Forchstrasse Zürich, Switzerland.
Spine
|February 2, 2023
Summary
A new score predicting surgical failure in degenerative lumbar spinal stenosis (DLSS) is introduced. High scores indicate a greater need for fusion surgery after decompression, aiding patient selection.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Surgery
Background:
- Degenerative Lumbar Spinal Stenosis (DLSS) requires careful patient selection for surgical success.
- Optimal treatment strategies for DLSS remain debated, impacting patient outcomes.
Purpose of the Study:
- To determine the treatment failure rate following lumbar decompression for DLSS.
- To develop a preoperative score to assist in surgical decision-making for DLSS patients.
Main Methods:
- A retrospective observational study of 445 patients undergoing surgical decompression for DLSS.
- Investigated risk factors including low back pain, facet joint effusion, and disk degeneration.
- Defined treatment failure as conversion to fusion surgery at a previously decompressed level.
Main Results:
- 6.5% of patients required revision surgery with spinal fusion.
- Baseline low back pain (LBP ≥7), facet joint effusion (>2 mm), and severe disk degeneration (Pfirrmann >4) significantly increased failure risk.
- A score of ≥6 demonstrated 90% sensitivity and 64% specificity for predicting treatment failure.
Conclusions:
- A novel preoperative score incorporating LBP, facet effusions, and disk degeneration can predict treatment failure after DLSS decompression.
- Patients with a score >6 are at high risk for requiring subsequent fusion surgery.
