Abstract
Our method of ossicular reconstruction type III and type IV is introduced. Before the ossicular reconstruction, we have to completely control inflammatory and infectious lesion in the middle ear cavity, and treatment should provide sufficient aeration for the tympanic cavity.It is necessary to grasp the relationship between the stapes and the tympanic membrane by measuring the tympanic cavity structure before trimming the material. We must understand not only the distance but also the three-dimensional alignment between the stapes and the tympanic membrane. According to the result of measuring, material must be adequately shaped for each case. For a type III procedure, the common length of material is between three and four millimeters, and for type IV, the length must be between six and seven millimeters.We have to pay careful attention to prevent inner ear damage and facial nerve injury at the time of insertion of material, and should find the most adequate position for the stability of material.
