Table 2:
Distances of STN, SON, and GON nerves from their neighboring bony landmarks.
| Distance (mm) | Overall | Rt (n=11) | Lt (n=11) | P-value | |||
|---|---|---|---|---|---|---|---|
| Mean±SD | Range | Mean±SD | Range | Mean±SD | Range | ||
| Midline-STN | 16.60±2.39 | 12.69–22.73 | 17.41±2.82 | 12.87–22.73 | 15.78±1.59 | 12.69–18.36 | 0.029 |
| Midline-SON | 25.51±3.25 | 21.11–32.31 | 26.72±3.77 | 21.11–32.31 | 24.29±2.18 | 21.82–28.63 | 0.022 |
| Nasion-STN | 4.32±2.25 | 0–8.45 | 4.18±2.11 | 0–7.58 | 4.45±2.49 | 0–8.45 | 0.411 |
| Nasion-SON | 9.82±2.62 | 4.2–13.91 | 9.70±2.49 | 4.41–13.91 | 9.94±2.87 | 4.2–13.89 | 0.769 |
| Horizontal distance (SON-STN) | 8.91±2.27 | 5.27–12.42 | 9.31±2.65 | 5.27–12.42 | 8.52±1.85 | 6.57–11.77 | 0.393 |
| Vertical distance (SON-STN) | 7.09±2.44 | 2.82–13.16 | 7.25±2.34 | 3.53–12.21 | 6.93±2.65 | 2.82–13.16 | 0.558 |
| Inion-GON | 34.92±8.48 | 21.73–50.82 | 34.85±8.95 | 21.73–49.95 | 34.99±8.42 | 21.76–50.82 | 0.929 |
| GON-Mastoid process | 51.12±9.23 | 32.8–64.76 | 50.94±9.31 | 37.62–63.34 | 51.30±9.61 | 32.8–64.76 | 0.830 |
STN: Supratrochlear nerve, N: Nasion, H (SON-STN)-horizontal distance between SON and STN, V (SON-STN)-vertical distance between SON and STN. The distance of the STN and SON from the mid-line on either side was found to be significant.