Table 7.
Comparison of foramen rotundum morphometric studies
| Study | Method | Sample | FR dimensions (mm) | Asymmetry/Difference | TN association |
|---|---|---|---|---|---|
| Ginsberg et al. [11] | CT (1.5 mm) | 123 patients | Length: 3.4 | None observed | Not assessed |
| Erbagci et al. [9] | CT (0.8 mm) | 21 TN / 24 controls | TN: R 3.04 × 3.2, L 2.8 × 2.9; Controls: R 2.4 × 3.2, L 2.5 × 3.1 | Not significant (p > 0.05) | No association |
| Liu et al. [16] | CT (0.6 mm) | 21 TN / 30 controls | TN: pain 2.50 ± 0.40, non-pain 2.71 ± 0.45; Controls: R 2.68 ± 0.38, L 2.56 ± 0.41 | Tendency only (p = 0.09) | Possible in NVC-negative cases |
| Kastamoni et al. [15] | 3D-CT (1 mm) | 19 TN / 158 controls | TN painful: L 1.78 ± 0.42, W 1.77 ± 0.46; Controls: L 2.14 ± 0.47, W 2.05 ± 0.48 | Significant (p = 0.001 L; p = 0.011 W) | Significant association |
| Sönmez et al. [21] | CT modified planes (1 mm) | 34 TN / 34 controls | TN: L 1.49 ± 0.39, W 1.11 ± 0.39; Controls: L 2.38 ± 0.55, W 1.80 ± 0.48 | Highly significant (p < 0.001) | Strong association |
| Ismail et al. [13] | CT (0.6 mm) | 57 TN / 40 controls | TN: W 0.21–0.26; Controls: W 0.25–0.28 (cm) | Right narrower (ns); right-sided pain 50.9% | Females narrower in TN (p < 0.001) |
TN: trigeminal neuralgia; L: length; W: width; R: right; NVC: neurovascular compressions