抄録
Fourty-five patients with lumbar spinal canal stenosis (LSCS), who had laminectomies performed on them, were reviewed. There were 21 men and 24 women whose ages ranged from 43 years to 79 years (average 61.2 years).
We examined correlations between views of magnetic resonance imaging (MRI) and operative results. We measured the size of thecal sac at the most stenotic level and classified forms of cauda equina as normal, partial grouping, total grouping and an unclear type from an axial view. Operative results were evaluated by the JOA score and Hirabayashi's improvement rate.
There were no correlations between the size of the thecal sac and the operative results.
Each type classified before operation had no differences in operative results compared with other types, but we recognized that only the normal type classified after operation had excellent operative results statistically.
