Introduction
Stapedotomy is considered as an efficient and safe surgical option in the treatment of stapes fixation. It has been shown that thepostoperative ABG of 10 dB or less (which is defined as surgical success according to AAO-HNS guidelines(1)) could be achievedin 87-97% of the cases(2). Although this number has to be considered as a high success rate, it means that at least one revision is needed in 13-3% of the surgeries. According to the available data,revision surgeries are generally more difficult to perform and their audiological results are inferior to primary surgeries(3).The prevention of primary failureseems to be themost favorable optionto achievesuperior results.Revision surgeries offerthe opportunity to recognize the exact reasons behind unsatisfactory results. According to previous data, intratympanic adhesion formation is one of the most common finding during revisions(4, 5), but its influence on the hearing results is not clearyet.Our goal was to indentify the most common and most influential postoperative reasons during our revison surgeries, causing persistent ABG. We focused on the mechanical dysfunctions in the middle ear, with special regard to postoperative fibrosis formation. Our hypothesis wasthat postsurgical inflammation and scar tissue formation in the middle ear could be the main reason behind compromised ABG gain.