Why the study?
Routines in Norwegian hospitals differ regarding how recent lumbar spine MRI should be before surgery, leaving the utility of repeated preoperative MRI unclear.
Does repeated preoperative MRI within a year before decompressive surgery for lumbar spinal stenosis show clinically meaningful changes?
Population
65 patients (78 levels) with lumbar spinal stenosis undergoing decompressive spine surgery
Comparison
Changes between 2 preoperative MRIs performed within the year before surgery
Design
Observational cohort study
Key result
Repeated MRI within the year before planned surgery for lumbar spinal stenosis showed few significant radiological changes, with dural sac cross-sectional area reduced by a mean of 2.3 mm2.
Authors
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May support selective repeat MRI use before lumbar stenosis surgery; leaves open prospective validation of imaging intervals.
Observational (n=65)
Yes
Does repeated preoperative MRI within a year before decompressive surgery for lumbar spinal stenosis show clinically meaningful changes?
Repeated MRI within a year before decompressive surgery for lumbar spinal stenosis shows few significant radiological changes, suggesting limited utility for surgeons.
Dybvik et al. (2023) conducted an observational in Lumbar spinal stenosis (n=65). Repeated preoperative MRI vs. Initial preoperative MRI was evaluated on Changes between the 2 preoperative MRIs for disc degeneration, foraminal stenosis, spondylolisthesis, and central canal stenosis. Repeated MRI within the year before planned surgery for lumbar spinal stenosis showed few significant radiological changes, with dural sac cross-sectional area reduced by a mean of 2.3 mm2.
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