Learning Objectives: to analyze the prognostic factors in type III tympanoplasty.
Hearing Results of Type III Tympanoplasty.
Objective: We report the hearing results of type III tympanoplasty to analyze the prognostic factors in type III tympanoplasty.
Methods: Patients who had been performed type III tympanoplasty in our department between October 2004 and February 2015 were retrospectively analyzed. Almost pacients underwent tympanoplasty with postauricular incision and canal wall up procedure.
Results: 317 patients underwent type III tympanoplasty in our department. The mean age was 47 years (range, 3 to 82 years). 87.4% of patients had an air-bone gap (ABG) of less than 20 ;dB. The average postoperative ABG is 12.8 dB. Hearing results were successful in 93.4% based on criteria proposed by the Otological Society of Japan. The hearing results of canal wall up Type III tympanoplasty were significantly more favorable than canal wall down. On comparison of columella, ceramic bone showed significantly poorer than autograft.
Conclusion: Canal wall up Type III tympanoplasty yields relatively good hearing results.