Evaluation of Growth and Development of the External Auditory Canal Using 624 Temporal Bone Computed Tomography Scans for Appropriate Cochlear Gene Delivery

The feasibility of transcanal endoscopic ear surgery depends on the diameter at the narrowest point of the EAC, the endoscope and surgical instrument dimensions, and the length of the bony part of the EAC needed to elevate a tympanomeatal flap. Based on our findings, a transmastoid microscopic approach should be considered instead of transcanal approach in patients under 1 year of age.