Table 3 Facet orientations according to cervical levels and genders
From: Relationship between facet tropism and facet joint degeneration in the sub-axial cervical spine
T-angle (°) | S-angle (°) | C-angle (°) | ||||
|---|---|---|---|---|---|---|
Right side | Left side | Right side | Left side | Right side | Left side | |
Male | ||||||
C2-C3 | 57.99 ± 7.77 | 56.87 ± 8.48 | 73.42 ± 7.73¶ | 73.71 ± 8.03¶ | 39.38 ± 7.77¶ | 40.23 ± 7.91¶ |
C3-C4 | 57.17 ± 5.74 | 56.44 ± 6.09 | 84.05 ± 7.98 | 84.50 ± 8.09 | 34.79 ± 6.61 | 35.14 ± 6.67 |
C4-C5 | 54.89 ± 6.49 | 54.7 ± 6.480 | 90.30 ± 7.88 | 89.94 ± 8.47 | 36.23 ± 7.01 | 36.64 ± 6.81 |
C5-C6 | 57.10 ± 6.51 | 56.69 ± 6.32 | 91.65 ± 8.78 | 91.65 ± 7.50 | 34.40 ± 6.53 | 34.45 ± 6.08 |
C6-C7 | 64.64 ± 6.66¶ | 63.85 ± 6.16¶ | 88.94 ± 8.08 | 89.85 ± 8.89 | 26.93 ± 6.46¶ | 27.75 ± 6.55¶ |
Female | ||||||
C2-C3 | 54.73 ± 7.73* | 54.72 ± 9.24 | 71.27 ± 6.32*¶ | 72.20 ± 6.76¶ | 41.19 ± 7.62¶ | 40.43 ± 9.16¶ |
C3-C4 | 56.21 ± 5.74 | 55.34 ± 6.60 | 84.28 ± 7.46 | 84.56 ± 7.20 | 35.61 ± 6.08 | 36.01 ± 6.49 |
C4-C5 | 55.00 ± 6.81 | 55.48 ± 5.87 | 92.17 ± 8.86 | 91.51 ± 7.84 | 36.50 ± 6.96 | 35.68 ± 5.86 |
C5-C6 | 55.95 ± 6.60 | 56.75 ± 5.74 | 93.45 ± 7.67¶ | 92.87 ± 8.33¶ | 35.27 ± 6.62 | 34.68 ± 6.09 |
C6-C7 | 63.39 ± 6.48¶ | 63.05 ± 7.31¶ | 90.19 ± 7.30 | 89.38 ± 7.61 | 27.76 ± 6.42¶ | 28.30 ± 7.37¶ |