Abstract
Many Japanese reports use the Japanese Otological Society （JOS） criteria 2000 or 1987 for evaluating the results of stapes surgery. The advantage of Amsterdam Hearing Evaluation Plots （AHEPs）, reported by J. G. De Bruijn for the evaluation of hearing gain, is the ability to evaluate hearing gain with overclosure and higher frequency hearing. In this report, we compared postoperative results using the JOS criteria and AHEPs, and found no difference between them. However, by using AHEPs, we found we could discriminate excellent cases among good cases. We also found that cases showing a low density area in the retrofenestral region on the CT tended to have poorer postoperative results; this was not revealed when we used the JOS criteria. We consider AHEPs to be a suitable method for detailed evaluation of otosclerosis.
