Research Article
The Influence of Natural Head Position on the Cervical Sagittal Alignment
Table 2
The correlation analysis between parameters.
| Variable | | Curvature type | McGS | C0–C2 angle | C2–C5 angle | C5–C7 angle | C2–C7 angle | T1 slope | C0–C2 SVA | C2–C7 SVA | CG–C7 SVA |
| Curvature type | r | 1 | −0.11 | 0.38 | −0.61 | −0.33 | −0.73 | −0.40 | 0.42 | 0.06 | 0.27 | | 0.29 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | 0.55 | 0.01 | McGS | r | | 1 | 0.57 | 0.05 | 0.08 | 0.12 | −0.05 | −0.53 | −0.28 | −0.47 | | <0.01 | 0.63 | 0.42 | 0.24 | 0.59 | <0.01 | <0.01 | <0.01 | C0–C2 angle | r | | | 1 | −0.51 | −0.17 | −0.53 | −0.07 | 0.12 | 0.18 | 0.18 | | <0.01 | 0.08 | <0.01 | 0.46 | 0.24 | 0.07 | 0.07 | C2–C5 angle | r | | | | 1 | −0.12 | 0.69 | 0.29 | −0.46 | 0.14 | −0.16 | | 0.24 | <0.01 | <0.01 | <0.01 | 0.15 | 0.11 | C5–C7 angle | r | | | | | 1 | 0.58 | 0.48 | −0.22 | −0.38 | −0.37 | | <0.01 | <0.01 | 0.03 | <0.01 | <0.01 | C2–C7 angle | r | | | | | | 1 | 0.55 | −0.53 | −0.15 | −0.39 | | <0.01 | <0.01 | 0.13 | <0.01 | T1 slope | r | | | | | | | 1 | −0.05 | 0.28 | 0.13 | | 0.61 | <0.01 | 0.21 | C0–C2 SVA | r | | | | | | | | 1 | 0.39 | 0.79 | | <0.01 | <0.01 | C2–C7 SVA | r | | | | | | | | | 1 | 0.85 | | <0.01 | CG–C7 SVA | r | | | | | | | | | | 1 | |
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Note: bold font indicates statistical significance (). McGS: slope of McGregor’s line; SVA: sagittal vertical axis.
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