Spine Patient Outcomes Research Trial (SPORT): Degenerative Spondylolisthesis With Spinal Stenosis

Removal of the hypertrophic inferior and superior articular facets will be performed when they are intruding upon the midline and causing both central and lateral recess stenosis

Active physical therapy modality, Education/Counseling with home exercise instruction, and an NSAID if tolerated. Any non-operative therapies other than these are accepted and collected as data.

In addition to decompressive laminectomy, additional bilateral non-instrumented or instrumented, i.e., posterior pedicle fixation, posterolateral fusion with autogenous bone grafting (utilizing iliac crest harvested from between the tables and/or local bone) will be performed between the transverse processes and the lateral portion of the superior facets of the involved levels.

additional bilateral non-instrumented or instrumented, i.e., posterior pedicle fixation, posterolateral fusion with autogenous bone grafting (utilizing iliac crest harvested from between the tables and/or local bone) will be performed between the transverse processes and the lateral portion of the superior facets of the involved levels.