Conclusion: The extent of inferior displacement of the mastoid tegmen is related to the severity of congenital aural atresia (CAA).
Objective: To analyze anatomic variations observed on high-resolution temporal bone computed tomography (TBCT) in patients with CAA, the extent of inferior displacement of the mastoid tegmen and the size of the incudo-stapedial (IS) joint angle were compared with surgical parameters for atresiaplasty, such as Jahrsdoerfer score and hearing acuity.
Methods: Sixty-one patients with unilateral CAA underwent high-resolution TBCT and hearing tests.