From: Sexual dimorphism of foramen magnum: An Egyptian study
Variables (cm.) | Present study | Abdel-Karim et al. [2015] | ||||||
---|---|---|---|---|---|---|---|---|
Male (n=163) | Female (n=204) | Male (n=46) | Female (n=24) | |||||
Mean ± SD | Min-Max | Mean ± SD | Min-Max | Mean ± SD | Min-Max | Mean ± SD | Min-Max | |
Right occipital condylar width | 1.16±0.13 | 0.84-1.48 | 1.11±0.14 | 0.80-1.49 | 1.22+1.11 | 0.9-1.5 | 1.11+.111 | 1.0-1.3 |
Left occipital condylar width | 1.12±0.13 | 0.77-1.41 | 1.13±0.12 | 0.73-1.43 | 1.2+.121 | 0.9-1.5 | 1.08+.119 | 0.9-1.3 |
Right occipital condylar length | 2.08±0.24 | 1.53-2.88 | 1.89±0.25 | 1.25-3.07 | 2.69+.2411 | 2.1-3.2 | 2.4+.133 | 2-3 |
Left occipital condylar length | 2.07±0.24 | 1.09-2.64 | 1.97±0.22 | 1.36-2.52 | 2.71+.256 | 2.1-3.2 | 2.37+.144 | 2.1-2.7 |
Maximum intercondylar distance | 2.89±0.59 | 1.34-5.35 | 2.72±0.49 | 1.82-4.77 | 3.16+.327 | 2.6-4.0 | 3.04+.210 | 2.6-3.5 |
Minimum intercondylar distance | 1.54±0.90 | 0.76-9.11 | 1.37±0.31 | 0.70-2.23 | .722+.133 | 0.4-1.0 | .68+.087 | 0.5-0.8 |
Foramen magnum width | 3.15±0.26 | 2.25-3.85 | 2.99±0.27 | 2.45-3.85 | 3.4+.343 | 2.5-4.4 | 3.14+.208 | 2.8-3.5 |
Foramen magnum length | 3.68±0.33 | 2.55-5.19 | 3.57±0.33 | 2.82-4.69 | 4.22+.378 | 3.4-5.1 | 3.88+.352 | 3.3-4.5 |