ABSTRACT
Otosclerosis is common disease of the ear and surgery on stapes is very fine operation. There are two techniques for surgical treatment of otosclerosis: stapedectomy [partial, Total] and stapedotomy. This is a retrospective clinical study that performed in referral center [university hospital] on four hundred and eight patients with otosclerosis treated by surgery. Surgery on 285 patients were stapedotomy and 89 were stapedectomy. Preoperative and postoperative hearing thresholds were compared. In this study hearing results after stapedectomy were better in comparison with small fenestrationstapedotomy. Skill and experience of the surgeon has a significant role in stapes surgery. As stapes surgery is a very fine operation it is recommended not to be done by unexperienced surgeon