Lumbar Canal Stenosis Caused by Marked Bone Overgrowth after Decompression Surgery

Figure 2

Radiographic images before and after the second surgery. (a) Computed tomography (CT) myelogram before the second surgery showing restenosis due to marked bone overgrowth of the lamina and facet joints. (b) Magnetic resonance (MR) image before the second surgery showing lumbar canal stenosis at L3/L4. (c) Dynamic X-ray images (neutral, extension, and flexion position) before the second surgery showing no significant changes in lumbar alignment or spinal stability. (d) CT image 4 days after the second surgery showing the results of the bilateral laminectomy at L3/L4.

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