Clinical Efficacy and Rehabilitation of Microscopic “Over the Top” for Bilateral Decompression in Degenerative Lumbar Stenosis: A Retrospective Study

Figure 1

CT scans of traditional decompression and microscopic “over the top” procedures. (a) Spinal lumbar canal stenosis. (b) Traditional decompression approach removed most posterior elements and resected a large portion of the bilateral facet joints. (c) Microscopic “over the top” indicated that a laminotomy was performed by removing a portion of the superior and inferior laminae at the segment, and a small part of the medial facet. Deep cortical surface of contralateral lamina was undercut and drilling was extended to the contralateral medial facet.

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