Table 1. Summary of the fusion assessed by RSA.
| Sheep ID | Months postop | RSA Measurements | RSA result | |
|---|---|---|---|---|
| 3D rotation (degree) | 3D translation (mm) | |||
| L1–L2 | ||||
| 1 | 12 | 0.4 | 0.4 | F |
| 2 | 12 | 2.6 | 0.6 | NF |
| 3 | 12 | 1.1 | 0.6 | F |
| 4 | 9 | 1.4 | 0.4 | F |
| 5 | 9 | 3.1 | 1.2 | NF |
| 6 | 9 | 2.3 | 0.7 | NF |
| 7 | 6 | 1.6 | 0.4 | F |
| 8 | 6 | 1.1 | 0.3 | F |
| 9 | 6 | 1.5 | 0.7 | NF |
| L3–L4 | ||||
| 1 | 12 | 1.5 | 0.5 | F |
| 2 | 12 | 1.7 | 1.0 | F |
| 3 | 12 | 0.9 | 0.2 | F |
| 4 | 9 | 2.0 | 0.6 | NF |
| 5 | 9 | 0.8 | 0.4 | F |
| 6 | 9 | 0.8 | 0.3 | F |
| 7 | 6 | 1.6 | 0.7 | NF |
| 8 | 6 | 1.6 | 0.7 | NF |
| 9 | 6 | 2.9 | 0.9 | NF |
| L5–L6 | ||||
| 1 | 12 | 3.5 | 2.6 | F |
| 2 | 12 | 8.5 | 2.5 | NF |
| 3 | 12 | 1.5 | 0.7 | NF |
| 4 | 9 | 4.6 | 2.1 | NF |
| 5 | 9 | 2.4 | 1.3 | NF |
| 6 | 9 | 8.7 | 4.2 | NF |
| 7 | 6 | 5.5 | 2.4 | NF |
| 8 | 6 | 3.2 | 1.6 | NF |
| 9 | 6 | 6.1 | 3.0 | NF |
Abbreviations: F, fused; NF, not fused; RSA, radiostereometric analysis; 3D, three dimensional.
Note: Of 27 levels, 11 were fused and 16 were not fused.