PMC8769397_01
Magnetic resonance scans acquired at the initial presentation. Bilateral lateral recess stenosis is evident at L3/4 and L4/5 on axial images. No central stenosis is seen on a sagittal image.
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F1
Magnetic resonance scans at the initial presentation revealed bilateral lateral recess stenosis at L3/4 and L4/5 on axial images with no central stenosis seen on a sagittal image (Fig. 1).
CT scans obtained after myelography before surgery. Four nerve roots (at L4 and L5 bilaterally) are impinged by lateral recess stenosis. CT: computed tomography.
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F2
All four nerve roots at L4 and L5 were impinged by lateral recess stenosis (Fig. 2).
Preoperative and postoperative CT scans and MRI. Successful ventral facetectomy with bony resection is confirmed at the L3/4 and L4/5 levels after the four surgical procedures. CT: computed tomography, MRI: magnetic resonance imaging.
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F3
CT scans confirmed successful ventral facetectomy and bony resection at both L3/4 and L4/5, and MRI showed decompression of the traversing nerve roots of both L4 and L5 (Fig. 3). Comparison of three-dimensional CT scans obtained before and after the surgery (Fig. 4) confirmed that bony resection performed through the intervertebral foramen was adequate at L3/4 and L4/5.
Three-dimensional CT scans obtained before and after the surgery. Bony resection performed through the intervertebral foramen is adequate at L3/4 and L4/5. CT: computed tomography.
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F4
CT scans confirmed successful ventral facetectomy and bony resection at both L3/4 and L4/5, and MRI showed decompression of the traversing nerve roots of both L4 and L5 (Fig. 3). Comparison of three-dimensional CT scans obtained before and after the surgery (Fig. 4) confirmed that bony resection performed through the intervertebral foramen was adequate at L3/4 and L4/5.