Direct Repair of Defects in Lumbar Spondylolysis with Segmental Pedicular Screw Hook Fixation

This is a retrospective study to evaluate the clinical outcome of patients who underwent with direct repair of spondylolytic defects of he lumbar spine by the segmental pedicular screw hook fixation technique using an ISOLA implant. Fourteen patients were included in this study (From Apr. 1996 to Aug. 2000). All patients had Type IIA spondylolytic defects of the lumbar spine with either a Grade 0 or Grade I spondylolisthesis. One surgeon performed the oper-ation. The patients were followed for an average of 23.4 months. The clinical results were evaluated using Henderson categories of function capacity. Preoperatively, 10 patients were evaluated “fair,” 3 as “poor,” and 1 as “good.” Postoperatively, 12 patients were evaluated as “excellent” and 2 as “good.” The radiographic analysis showed solid fusion of the pars defects in all patients (100%). In 9 patients the implants were removed, and during removal we observed a solid-fusion of the bone-graft in the fracture site without pseu-doarthrosis. This technique is a simple and effective method for the direct repair of spondylolysis. It is only indicated in young patients with pure spondylolysis and a small amount of slippage.

並列關鍵字

Bone fusion ； segmental pedicular screw hook fixation ； spondy-lolysis

國際替代計量

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