Table 2.

Morphometrics data

Parameter	Mean	Standard deviation	Range
Hardy’s A	7.95 mm	0.44	2.3
Cochlear duct length	30.37 mm	1.86	9.56
Cochlear aperture	1.79 mm	0.125	0.5
Apical turn diameter	1.09 mm	0.09	0.7
Middle turn diameter	1.51 mm	0.13	0.52
Basal turn diameter	1.91 mm	0.13	0.8
Cochlear base width	7.95 mm	0.44	2.3
Internal auditory canal (IAC) diameter	5.06 mm	1.17	4.12
Cochlear nerve calibre (at Fundus)	0.97 mm	0.13	0.4
Facial nerve calibre (at Fundus)	0.64 mm	0.074	0.3
Distance from vertical facial to Annulus (maximum)	3.07 mm	0.12	0.49
Distance from mastoid cortex to vertical facial	1.17 cm	0.06	0.29
Alpha angle	58.7 degree	4.3	17.7
Beta angle	17.3 degree	2.1	9.3