Clinical results of SPSL procedure in the present series.
| VAS (Back pain) | Pre-op | 7.8 ± 1.8 (4 - 10) |
| Post-op | 3.7 ± 1.3 (2 - 7) | |
| JOA score | Pre-op | 6.3 ± 2.4 (-1 - 11) |
| Post-op | 11.2 ± 2.6 (1 - 14) | |
| Recovery rate (%) | 57.3 ± 26.4 (-40% to 90%) | |
| McNab's grade of improvement | Excellent | 7 cases (18%) |
| Good | 23 cases (59%) | |
| Fair | 7 cases (18%) | |
| Poor | 2 cases (5%) |
Values are read as “Mean ± Standard deviation (Minimum value – Maximum value).” VAS – Visual analog scale; JOA – Japanese Orthopaedic Association.