Abstract
Since the new technique of stapes mobilization was introduced, in 1952, * one of us (S. R.) has performed over 700 of these operations. On the basis of this experience it can be stated that the degree of hearing improvement attainable by this technique is higher than that attainable by other surgical procedures. Davis and Walsh 5 and McConnell and Carhart 6 have shown that the most successful fenestration operation still leaves the patient with a residual hearing loss greater by 20 to 25 db. than the cochlear potential (as measured by bone conduction) because of the interruption of the ossicular chain and other structural changes. The social adequacy level of 30 db. residual loss following fenestration has been the standard accepted as a successful result. Shambaugh 7 stated that a patient with a postoperative fenestration residual loss of 30 db. is completely rehabilitated. However, others have long believed that a
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