Morphometric analysis of posterior cranial fossa and foramen magnum and it’s clinical implications in craniovertebral junction malformations: a computed tomography based institutional study in a tertiary care hospital of northern part of India

Egyptian Journal of Neurosurgery

Table 11 Comparison of Angular Craniometric Parameters of Posterior Cranial Fossa, Foramen Magnum and surrounding territory in between genders

Angular Craniometric Parameters	Female (n = 61) Mean ± SD	Male (n = 59) Mean ± SD	Total Mean ± SD	p value
Basal angle (°)	125.68 ± 5.24	126.17 ± 3.37	125.92 ± 4.41	0.542^a
Boogard angle (°)	136.19 ± 3.02	137.62 ± 3.63	136.89 ± 3.39	0.021^a
NBO angle (°)	169.07 ± 1.93	169.75 ± 2.04	169.4 ± 2.01	0.061^a
Foramen Magnum angle (°)	12.97 ± 1.7	12.79 ± 1.79	12.88 ± 1.74	0.575^a
Clivo-odontoid angle (°)	146.72 ± 8.63	144.4 ± 8.84	145.58 ± 8.78	0.149^a
Clivo palatal angle (°)	60.23 ± 6.23	59.95 ± 5.27	60.1 ± 5.76	0.79^a
Clivus canal angle (°)	162.11 ± 8.82	160.24 ± 9.29	161.19 ± 9.07	0.259^a
Clivus supraocciput angle (°)	77.29 ± 4.33	77.92 ± 4.73	77.6 ± 4.52	0.451^a
Tentorial slope (°)	89.63 ± 5.82	87.33 ± 5.73	88.5 ± 5.87	0.031^a
Tentorial twinning line angle (°)	34.14 ± 2.09	34.04 ± 2.17	34.09 ± 2.12	0.794^a