The Effect of the Angle and Length of the Eustachian Tube on the Success Rate of Cartilage Type 1 Tympanoplasty

To explore the relationships between the angle and length of the eustachian tube (ET) (the ETa and the ETl) and the success rates of type 1 tympanoplasty. A retrospective clinical chart review. In total, 160 patients (81 females and 79 males; average age, 37.12 ± 12.46 years; age range: 18-65 years) who underwent cartilage type 1 tympanoplasty were included. Demographics and anatomical outcomes were recorded. The patients were divided into 2 groups in terms of anatomical success. The average ETa and ETl values of each group were measured on computed tomography images using a multiplanar reconstruction technique, and compared. A P value 0.05). Neither the ETa nor the ETl affected the success rate of cartilage type 1 tympanoplasty. Further studies with larger numbers of patients are needed to compare anatomical outcomes after placement of various graft types and the effects of anatomical features of the ET on the success rate of type 1 tympanoplasty.