Grade of severity prior surgery | Number of cases | Number of cases with successful outcome |
---|---|---|
Pain only (grade 1) | 304 | 275 (90.5%) |
Ambulatory paraparesis (grade 2) | 493 | 441 (89.5%) |
Non-ambulatory paraparesis (grade 3) | 446 | 405 (90.8%) |
Paraplegia with intact DPP (grade 4) | 182 | 160 (87.9%) |
Paraplegia with loss of DPP (grade 5) | 54 | 47 (87.0%) |
Total | 1479 | 1328 |