Absolute average change in motion per segment after cervical fusion of C5–C6.
| Motion Segment | Average Change in Motion (°) | P Value |
| C2–C3 | +1.0 | 0.28 |
| C3–C4 | +0.2 | 0.80 |
| C4–C5 | +1.4 | 0.07 |
| C5–C6 | −6.8 | 0.002 |
| C6–C7 | +2.0 | 0.15 |
| C7–T1 | +3.0 | 0.04 |
Boldface indicates statistically significant differences of P < 0.05.