Table 1 The cervical vertebrae reference points
No. | Point name | Description |
|---|---|---|
1 | SVp | The posterior point of the lower edge of the second vertebra |
2 | SVd | The deepest point of concavity at the lower edge of the second vertebra |
3 | SVa | The anterior point of the lower edge of the second vertebra |
4 | TVup | The posterior point of the upper edge of the third vertebra |
5 | TVum | The center point of the upper edge of the third vertebra |
6 | TVua | The anterior point of the upper edge of the third vertebra |
7 | TVpm | The posterior point of the center edge of the third vertebra |
8 | TVam | The anterior point of the center edge of the third vertebra |
9 | TVlp | The posterior point of the lower edge of the third vertebra |
10 | TVd | The deepest point of concavity at the lower edge of the third vertebra |
11 | TVla | The anterior point of the lower edge of the third vertebra |
12 | FVup | The posterior point of the upper edge of the fourth vertebra |
13 | FVum | The center point of the upper edge of the fourth vertebra |
14 | FVua | The anterior point of the upper edge of the fourth vertebra |
15 | FVpm | The center point of the posterior edge of the fourth vertebra |
16 | FVam | The center point of the anterior edge of the fourth vertebra |
17 | FVlp | The posterior point of the lower edge of the fourth vertebra |
18 | FVd | The deepest point of concavity at the lower edge of the fourth vertebra |
19 | FVla | The anterior point of the lower edge of the fourth vertebra |