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Comparison of range of motion in flexion and extension, side bending, and axial rotation.
| Normal model | Model A | Model B | |
|---|---|---|---|
| Flexion | 12.03° | 1.11° | 1.1° |
| Extension | 7.73° | 0.01° | 0.01° |
| Left lateral bending | 7.24° | 0.41° | 0.36° |
| Right lateral bending | 7.85° | 0.4° | 0.35° |
| Left axial rotation | 5.75° | 0.63° | 0.55° |
| Right axial rotation | 6.08° | 0.64° | 0.56° |
