Abstract
The mucocutaneous junction of a perforation of the tympanic membrane can be located at the margin, in the middle ear, or in the ear canal. It is incumbent upon the surgeon performing myringoplasty to identify this junction in order to optimize the success of surgery. About 1/3 of the healed area following performation has an intermediate fibrous layer. The membranes in 2 cases of myringoplasty evidenced thicker-than-normal intermediate layers.

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