Details of the system used, patient age and gender, number of levels operated, Schizas and Lee grades of spinal stenosis, Pfirrmann grade of intervertebral disc degeneration, number of stages of surgery, and preoperative T scores.
| Patient Number | System | Age, y | Gender | Level | Schizas Grade | Lee Grade | Pfirrmann Grade | Stage | Preop T Score |
| 1 | Dynesys | 48 | F | T12-S1 | B | 1 | 4 | 2 | -2.5 |
| 2 | Dynesys | 65 | F | T10-S1 | C | 2 | 4 | 2 | -2.5 |
| 3 | Dynesys | 51 | M | L2-Iliac | B | 1 | 3 | 1 | -1.5 |
| 4 | Dynesys | 63 | F | T9-L5 | D | 3 | 5 | 1 | -1.5 |
| 5 | Dynesys | 47 | M | T12-Iliac | B | 1 | 4 | 1 | -1.5 |
| 6 | Dynesys | 54 | F | L3-Iliac | A3 | 0 | 4 | 1 | -1.5 |
| 7 | Dynesys | 41 | F | L2-Iliac | C | 2 | 3 | 1 | -1 |
| 8 | Dynesys | 77 | F | T12-L5 | D | 3 | 5 | 1 | -1.5 |
| 9 | Dynesys | 65 | F | T10-Iliac | D | 3 | 5 | 1 | -2.5 |
| 10 | Dynesys | 79 | F | L2-Iliac | A2 | 0 | 4 | 1 | -2.5 |
| 11 | Dynesys | 66 | F | L2-S1 | B | 1 | 4 | 2 | -2.5 |
| 12 | Dynesys | 68 | F | T10-S1 | C | 2 | 4 | 1 | -2.5 |
| 13 | Dynesys | 44 | M | L2-Iliac | A3 | 0 | 2 | 1 | -1 |
| 14 | Dynesys | 68 | F | T10-Iliac | D | 3 | 4 | 1 | -1.5 |
| 15 | Dynesys | 69 | F | T6-S1 | D | 3 | 4 | 2 | -2.5 |
| 16 | Dynesys | 61 | M | L1-S1 | D | 3 | 5 | 1 | -1.5 |
| 17 | Dynesys | 72 | M | T12-Iliac | A2 | 0 | 4 | 1 | -2.5 |
| 18 | Dynesys | 78 | F | L1-S1 | B | 1 | 4 | 1 | -1 |
| 19 | Dynesys | 67 | M | T10-Iliac | B | 1 | 5 | 2 | -2.5 |
| 20 | Orthrus | 68 | F | T12-S1 | C | 2 | 5 | 1 | -1.5 |
| 21 | Orthrus | 61 | F | T11-S1 | A3 | 0 | 3 | 1 | -1.5 |
| 22 | Orthrus | 77 | F | L2-Iliac | B | 1 | 4 | 1 | -1.5 |
| 23 | Orthrus | 65 | M | L2-S1 | D | 3 | 4 | 1 | -1.5 |
| 24 | Orthrus | 52 | M | T11-L5 | C | 2 | 4 | 1 | -1 |
| 25 | Orthrus | 67 | M | L1-S1 | D | 3 | 4 | 1 | -1.5 |
Abbreviations: F, female; M, male; Preop, preoperative.