Abstract
We evaluated the results of enlargement of the lumbar spinal canal in 67 cases (30 men, 37 women, mean age 65.5 years) with degenerative spondylolisthesis (who received treatment between 1991 and 1999 at our department). Mean follow-up period was eight years. Preoperative mean JOA score was 14.4 points, those improved to 21.6 points at the final follow-up evaluation. The evaluations based on the Hirabayashi recovery rate were as follows; 48 cases good results (50-100%), 19 bad results (0-49%).
As a cause of the example of poor results, existence of increase of postoperative instability and the preoperative degenerative scoliosis can be considered.
It’s to reconsider bad result cases once more and observe passage, and it’s possible to get appropriate operation indication, and I think it’s possible to get better results.
