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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Otol Neurotol. 2012 Apr;33(3):328–334. doi: 10.1097/MAO.0b013e318245cc9f

Figure 4.

Figure 4

Orientation about the long axis of the basal turn of the cochlea. Demonstration of the angle between the: a) the center line of the most lateral ear canal (LatEAC) and the long axis of the basal turn of the cochlea (BT); b) line perpendicular to the facial recess (⊥FR) and the long axis of the basal turn of the cochlea (BT) (purple: facial nerve; green = chorda tympani); c) line perpendicular to the tympanic membrane (⊥TM) and the long axis of the basal turn of the cochlea (BT); d) the selected drilling trajectory (TRJ) and the long axis of the basal turn of the cochlea (BT).