Underlay allograft myringoplasty

ABSTRACT

Temporalis fascia, taken from other patients during tympanoplasties, was used as allograft for closure of dry central small and medium sized [7 x 7 mm or less] tympanic membrane perforations via a transcanal underlay technique. Fifty-eight myringoplasties were done under local anesthesia except for three received general anesthesia. Assessment of outcome was judged by two criteria; graft take and hearing gain. Forty-six were successful with total graft take, while twelve failed with a partial take in 15.52% and total no take in 5.17%. No significant influence of sex, age, duration of perforation and discharge free period was found. There was inverse linear relationship between perforation size and success rate. Posterior and central perforations showed better success rates than anterior perforations. Improvement air conduction thresholds was achieved in 69.57% of successful myringoplasties with closure of air-bone gap within 10 dB in 52%. Postoperative bone conduction thresholds were slightly altered