gms | German Medical Science

Hypothesis: The goal of this study was to investigation the advantage and disadvantage of use the Bulgarian prosthesis for stapedoplasty. Background: In stapes surgery, the attachment of the prosthesis to the long process of the incus plays an important role concerning the gain in hearing and the development of late complications such as incus erosion and necrosis. In the world have been different modifications of prosthesis, which differ in the attachment to the long process of the incus.

Methods: For a period of 4 years in ENT Dept. – Sofia and in ENT Dept. – Stara Zagora have been perform 450 stapedoplastic operations with our prosthesis by patients with otosclerosis. We use Bulgarian prosthesis, what is modifications of 0.6-mm Fluoroplastic Piston with Teflon Loop a modo Causse whit length 7 mm. The modification manifest in four grooves in the inside surface of the Teflon loop, what achieved better contact of the prosthesis to the long process of the incus, what bring unbroken blood supply towards it, and prevent incus erosion and necrosis.

Results: Audiologic results of using the prosthesis correspond with these from other authors, who use another type of prosthesis. Moreover in the re-operations we have not observed necrosis of the long process of the incus by using the Bulgarian prosthesis.

Conclusion: It is underlining the advantages of our prosthesis not only for the late results, but for easily surgical work. The price of the prosthesis is extremely low, what is an advantage for popular application.