CIRURGIA DE RECONSTRUÇÃO DE ORELHA MÉDIA

Middle ear works as a sound amplifier. Three kinds of mechanism are used for this purpose: the hydraulic, the ossicular lever and the windows set. The most important of them is concentration of vibratory energy in the oval windows. (hydraulic mechanism). We can divide the disfunctions of the ossicular chain in two categories: with reduction of the chain vibration and with interruption of the ossicular chain. In this article we will report the problems that may occur in the surgery of the reconstruction of the ossicular chain.