Level and grade of SCI in group I and group II patients
| Group I (n) | Group II (n) | |
| Level of SCI | ||
| C2–3 | 2 | 0 |
| C4–5 | 8 | 0 |
| C6–7 | 6 | 0 |
| T1–5 | 1 | 0 |
| T6–10 | 1 | 0 |
| T11–12 | 0 | 11 |
| L1–5 | 0 | 7 |
| Grade of SCI | ||
| Frankel grade A | 10 | 12 |
| Frankel grade B | 8 | 6 |
C, cervical spinal cord; T, thoracic spinal cord; L, lumber spinal cord.