A scanning electron microscopic study of crimping of stapedial prostheses.

Objective: The aim of this study was to evaluate, through the Scanning Electron Microscopy, the loop closure of four types of stapedial prostheses and to compare the different systems of crimping to the long process of the incus.

Materials And Methods: Four types of stapedial prostheses (one platinum-teflon, two different titanium and one nitinol-teflon pistons) were inserted in 40 specially prepared temporal bones simulating the in vivo stapedotomy procedure. Two pistons were crimped by single manual manoeuvre with a McGee microforceps; the remainders were self-retained and thermal-crimped, respectively.