| Fränkel Preoperative | Number (n) | Fränkel Late postoperative | Number (n) |
| Fränkel A: sensory-motor deficit complete | 12 | A | 10 |
| Fränkel B: complete motor deficit presence of some sensory functions | 5 | B | 2 |
| Fränkel C: presence of some motor functions motor functions present and unusable | 3 | C | 1 |
| Fränkel D: Motor function present and usable, walking with assistance | 0 | D | 3 |
| Fränkel E: No sensory and sphincter disorders sphincter | 0 | E | 4 |
| Total | 20 | Total | 20 |