Abstract
Introduction
Clinical symptoms in lumbar degenerative spondylolisthesis (LDS) vary from predominantly radiating pain to severe mechanical low back pain. We examined whether the outcome of surgery for LDS varied depending on the predominant baseline symptom and the treatment administered [decompression with fusion (D&F) or decompression alone (D)].
Methods
213 consecutive patients (69 ± 9 years; 155f, 58 m) participated. Inclusion criteria were LDS, maximum three affected levels, no previous surgery at the affected level, and D (N = 56) or D&F (N = 157) as the operative procedure. Pre-op and at 12 months’ follow-up (FU), patients completed the multidimensional Core Outcome Measures Index (COMI) including 0–10 leg-pain (LP) and LBP scales. At 12 months’ FU, patients rated global outcome which was then dichotomised into “good” and “poor”.
Results
Pre-operatively, LBP and COMI scores were significantly worse (p < 0.05) in the D&F group than in the D group. The improvement in COMI at 12 months’ FU was significantly greater for D&F than for D (p < 0.001) and was not influenced by the patient’s declared “main problem” at baseline (back pain, leg pain, or neurological disturbances) (p > 0.05). There was a higher proportion (p = 0.01) of “good” outcomes at 12 months’ FU in D&F (86%) than in D (70%). Multiple regression analysis, controlling for possible confounders, revealed treatment group to be the only significant predictor of outcome (adding fusion = better outcome).
Discussion
Our study indicated that LDS patients showed better patient-based outcome with instrumented fusion and decompression than with decompression alone, regardless of baseline symptoms. This may be due to the fact that the underlying slippage as the cause of the stenosis is better addressed with fusion.
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Acknowledgments
We are grateful to Gordana Balaban, Dave O’Riordan, Julian Amacker, Kirsten Clift, and Sara Preziosa, for their excellent work collecting the data
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Kleinstueck, F.S., Fekete, T.F., Mannion, A.F. et al. To fuse or not to fuse in lumbar degenerative spondylolisthesis: do baseline symptoms help provide the answer?. Eur Spine J 21, 268–275 (2012). https://doi.org/10.1007/s00586-011-1896-1
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DOI: https://doi.org/10.1007/s00586-011-1896-1