Fig. 1

Diagram of the marginal perforations not involving the malleus. Tympanic membrane perforation (a); the perforation edges were refreshed and annulus was de-epithelialized, a small rim of EAC was removed (b); the perichondrium was listed off of the cartilage over 2 mm on one end (c); the uncover cartilage was partially removed (d); the cartilage covered by perichondrium was placed medial to the remnant TM, the free perichondrium was placed lateral to the annulus and exposed EAC (e)