Table 1.
Hybrid testing results
| Ranges of motion (degrees) | T12–L1 | L1–L2 | L2–L3 | L3–L4 | L4–L5 | L5–S1 |
|---|---|---|---|---|---|---|
| A. Flexion/extension | ||||||
| Intact | 5.82 ± 1.86 | 6.78 ± 2.02 | 5.90 ± 1.43 | 7.34 ± 1.41 | 8.26 ± 2.57 | 4.73 ± 3.40 |
| StabilimaxNZ® | 6.65 ± 1.88* | 7.05 ± 2.04 | 6.34 ± 1.83 | 8.49 ± 1.81 | 5.44 ± 1.95* | 4.97 ± 3.62 |
| Simulated fusion | 7.13 ± 2.11 | 7.53 ± 1.76 | 6.91 ± 2.04 | 9.79 ± 2.77 | 2.04 ± 1.20* | 5.27 ± 4.88 |
| B. Bilateral lateral bending | ||||||
| Intact | 6.58 ± 2.22 | 7.21 ± 2.25 | 9.25 ± 1.61 | 8.32 ± 2.84 | 7.81 ± 2.99 | 5.31 ± 3.44 |
| StabilimaxNZ® | 7.04 ± 2.25 | 8.22 ± 3.09 | 10.00 ± 1.81 | 8.57 ± 2.68 | 4.85 ± 1.65* | 5.91 ± 3.75 |
| Simulated fusion | 7.39 ± 2.36* | 9.00 ± 3.59* | 10.95 ± 1.98* | 9.91 ± 3.11* | 0.89 ± 0.34* | 7.21 ± 4.93* |
| C. Bilateral torsion | ||||||
| Intact | 3.11 ± 2.30 | 3.56 ± 2.48 | 4.02 ± 1.95 | 5.19 ± 2.31 | 4.12 ± 1.26 | 2.85 ± 1.52 |
| StabilimaxNZ® | 3.01 ± 2.28 | 3.7 ± 2.66 | 3.93 ± 1.84 | 5.38 ± 2.36 | 4.86 ± 1.46 | 2.73 ± 1.29 |
| Simulated fusion | 3.63 ± 2.61* | 4.32 ± 2.89* | 4.70 ± 2.36* | 6.26 ± 2.58* | 1.49 ± 1.09* | 3.80 ± 1.71* |
Average ± 1 SD of intervertebral ranges of motion (iROM) in degrees for the Intact, StabilimaxNZ®, and simulated fusion
*Significant (P < 0.05) difference with respect to the corresponding Intact values