Comparison of VAS and ODI improvement between spondylolysis alone and spondylolysis with spondylolisthesis after percutaneous endoscopic pars decompression.
| Outcome Measure | Spondylolysis Alone (n = 5), Mean ± SD | Spondylolysis With Spondylolisthesis (n = 6), Mean ± SD | P Value |
| VAS improvement | 87.00% ± 18.57% | 53.98% ± 43.91% | 0.154 |
| ODI improvement | 81.91% ± 16.97% | 27.57% ± 21.45% | 0.001 |
Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.
Note: An independent sample t test was used to compare the results. P values <0.05 were considered to be statistically significant.