Table 4 Accuracy of CBCT-modeled cervical spine vertebrae across functional AR position models relative to a neutral position model.
From: Validation and application of a novel in vivo cervical spine kinematics analysis technique
Posture | Level | Average distance | Maximum distance | Standard deviation | Angular prediction | ||||
|---|---|---|---|---|---|---|---|---|---|
Mean deviation | Mean absolute deviation | + | − | + | − | ||||
Right rotation | C1 | 0.00 | 0.19 | 0.20 | − 0.20 | 2.41 | − 2.49 | 0.29 | 0.00 |
C2 | 0.00 | 0.14 | 0.15 | − 0.14 | 2.32 | − 1.82 | 0.21 | 0.00 | |
C3 | 0.00 | 0.14 | 0.13 | − 0.14 | 1.75 | − 1.86 | 0.18 | 0.00 | |
C4 | 0.02 | 0.14 | 0.10 | − 0.11 | 1.71 | − 1.28 | 0.14 | 0.10 | |
C5 | 0.02 | 0.12 | 0.11 | − 0.11 | 1.76 | − 1.76 | 0.15 | 0.10 | |
C6 | 0.00 | 0.11 | 0.12 | − 0.12 | 1.58 | − 2.32 | 0.18 | 0.00 | |
C7 | 0.03 | 0.40 | 0.29 | − 0.35 | 3.07 | − 3.59 | 0.52 | 0.14 | |
Left rotation | C1 | 0.01 | 0.19 | 0.18 | − 0.19 | 2.25 | − 2.46 | 0.27 | 0.05 |
C2 | 0.00 | 0.15 | 0.15 | − 0.15 | 2.19 | − 1.88 | 0.21 | 0.00 | |
C3 | 0.00 | 0.13 | 0.13 | − 0.13 | 1.58 | − 1.95 | 0.17 | 0.00 | |
C4 | 0.01 | 0.12 | 0.13 | − 0.11 | 1.63 | − 1.48 | 0.16 | 0.05 | |
C5 | 0.02 | 0.12 | 0.13 | − 0.10 | 1.99 | − 1.80 | 0.16 | 0.10 | |
C6 | 0.00 | 0.12 | 0.12 | − 0.12 | 2.25 | − 2.58 | 0.18 | 0.00 | |
C7 | 0.07 | 0.43 | 0.36 | − 0.50 | 3.22 | − 3.61 | 0.65 | 0.34 | |
