[Experiences of second type Ⅰ tympanoplasty].

Type Ⅰtympanoplasty is a delicate operation. Poor surgical outcomes of the first operation were due to inadequate exposure, mucosal lesion of the promontory, and inadequate gelatin sponge filling in the middle cavity. Post auricular approach, enlarged and straight external canal could optimize the operation vision, resolve the adhesion of the tympanum easily and acquire the adequate anterior overlap, which are benefit for success closure of the perforation and better hearing after surgery.