In a series of 446 TORP and PORP operations, unsatisfactory hearing was the most common cause of failure (18%), whereas prosthesis extrusion and severe sensori-neural hearing impairment were rare.
Hearing outcomes predominate as failure mode in ossiculoplasty; Level 5 data leave open optimal technique refinements.
This is a review of the causes of failure in 5 1/2 years of personal experience with TORPs and PORPs. Prosthesis extrusion, the cause of failure in less than 5% of 446 TORP and PORP operations, usually was the result of a mucous membrane or eustachian tube problem. Severe sensori-neural hearing impairment occurred in less than 1%, and these were operations in which the oval window was opened. Unsatisfactory hearing was the cause of failure in 18%.
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James L. Sheehy (1984) studied this question.
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