• Otosclerotic deafness, in which the foot plate of the stapes becomes rigid and obstructs sound from reaching the cochlea, can be treated by surgical mobilization of the foot plate. The operative approach is such as to expose the stapes and incus to direct vision with good illumination and magnification. The operation itself, which should be rehearsed on at least 50 fresh cadavers, involves the use of a special mobilizer whereby pressure can be applied to the stapes; an additional instrument may be used for dealing with adhesions about the ossicles or round window.
The operation has been used in 211 cases, and the results have been assessed by pure tone audiometry, speech audiometry, and speech discrimination tests. Striking improvement has been demonstrated in many cases, and in some there has been dramatic improvement on the operating table. Improvement is limited by the extent of cochlear involvement. In moderate and profound otosclerotic deafness, the mobilization operation can restore useful aided or unaided hearing.
Rosen S. RESULTS OF MOBILIZATION OF FIXED STAPEDIAL FOOT PLATE IN OTOSCLEROTIC DEAFNESS. JAMA. 1956;161(7):595–599. doi:10.1001/jama.1956.02970070027007
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