In this paper, the clinical results of tympanoplasty in 21 cases of tympanosclerosis and the propriety of this operation was discussed. The following conclusions were obtained.
1. Otoscopic observation revealed big perforation of the ear drum with small amount of discharge which was very favorable to tympanoplasty. But the results obtained was not satisfactory.
2. In the cases with negative bone conduction threshold and moderate hearing loss, the results of the surgery were especially unsatisfactory.
3. The result of type III tympanoplasty was most satisfactory. Therefore it was concluded that incus should be removed in the procedure of the surgery and the sclerotic tissue around the stapes should be removed thoroughly.
4. Stapedectomy or fenestration operation should not be done primarily in tympanosclerosis.
