OBJECTIVE: To observe the factors influencing the success of type-I tympanoplasty by underlay
technique, in closing tympanic membrane perforation of variable size and location with temporalis
DESIGN: Prospective study.
PLACE AND DURATION OF STUDY: Department of Otorhinolaryngology, Head & Neck Surgery,
Jinnah Postgraduate Medical Centre, Karachi from April 2004 to November 2006.
PATIENT & METHODS: Hundred (100) consecutive patients of dry tympanic membrane perforation
undergoing type-I tympanoplasty were included. Specific inclusion and exclusion criteria
were set. Data were collected regarding age, gender, cause, site and size of tympanic membrane
perforation, pre and postoperative audiogram results. The data were entered in a set performa
and was analyzed using SPSS version 14.0
RESULTS: The male: female ratio was 2:3 with age varying from 18 to 40 years (mean age 31.2).
Overall success rate was 81% (81 out of 100 perforations closed successfully). There was no
significant effect of age, gender and size of perforation on closure. All patients with traumatic
perforation had successful closure (100% with a p-value of
Tympanoplasty, tympanic membrane perforation, air conduction threshold, bone
conduction threshold, air bone gap.