Cavum major tympano-ossiculoplasty

Objective: To evaluate the success of tympano-ossiculoplasty in patients wi th previous canal wall down mastoidectomy. Study Design: A retrospective review of 79 patients who underwent cavum maj or tympano-ossiculoplasty from a total of 1.910 tympanomastoidectomies from 1976 to 1998. Outcome Measures: The results of air-bone gap closure, surgical findings, a nd revision surgery are presented. Results: In 63% of patients, the air-bone gap closed to within 20 dB with a mean gain of 14.7 dB. Conclusion: A significant percentage of patients will gain substantial impr ovement in their hearing after cavum major tympano-ossiculoplasty with mini mal risk.