Correlation between projection of the ear, the inferior crus, and the antihelical body: analysis based on computed tomography.

We investigated the correlation between projection of the ear and the antihelical folding angle to clarify which portion of the antihelix should be corrected in reconstruction of prominent ears using computed tomograms of 15 ears in 11 patients with fractures of the facial bones. The angle of the scaphotriangular fossa indicating the superior crus, cymba conchae-triangular fossa angle indicating the inferior crus, and the scaphoconchal angle indicating the antihelical body were measured. There was no relation between the cranioauricular angle and the angle of the scaphotriangular fossa. However, there were significant relations between the cranioauricular angle and the cymba conchae-triangular fossa angle, and the cranioauricular and scaphoconchal angles, which suggests that emphasis should be placed on reconstruction of the inferior crus and antihelical body when prominent ears are being corrected.