Table 3 Accuracy of CBCT-modeled cervical spine vertebrae across functional LB 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 bend | C1 | 0.00 | 0.19 | 0.19 | − 0.19 | 3.22 | − 2.37 | 0.33 | 0.00 |
C2 | 0.00 | 0.14 | 0.14 | − 0.14 | 2.07 | − 2.56 | 0.23 | 0.00 | |
C3 | 0.00 | 0.14 | 0.14 | − 0.14 | 1.96 | − 2.23 | 0.20 | 0.00 | |
C4 | 0.02 | 0.14 | 0.12 | − 0.15 | 1.90 | − 2.47 | 0.17 | 0.10 | |
C5 | 0.02 | 0.12 | 0.10 | − 0.13 | 1.80 | − 2.02 | 0.15 | 0.10 | |
C6 | 0.00 | 0.11 | 0.11 | − 0.11 | 1.46 | − 2.34 | 0.16 | 0.00 | |
C7 | 0.03 | 0.40 | 0.43 | − 0.37 | 3.29 | − 3.43 | 0.64 | 0.14 | |
Left bend | C1 | 0.01 | 0.19 | 0.18 | − 0.19 | 2.30 | − 2.77 | 0.28 | 0.05 |
C2 | 0.01 | 0.16 | 0.15 | − 0.16 | 2.11 | − 2.43 | 0.22 | 0.05 | |
C3 | 0.02 | 0.17 | 0.18 | − 0.15 | 2.04 | − 2.21 | 0.24 | 0.10 | |
C4 | 0.01 | 0.13 | 0.12 | − 0.14 | 1.87 | − 2.29 | 0.18 | 0.05 | |
C5 | 0.01 | 0.14 | 0.13 | − 0.14 | 2.14 | − 2.30 | 0.18 | 0.05 | |
C6 | 0.01 | 0.13 | 0.13 | − 0.12 | 1.44 | − 1.72 | 0.18 | 0.05 | |
C7 | 0.01 | 0.44 | 0.45 | − 0.43 | 3.20 | − 3.34 | 0.66 | 0.05 | |
