Bone Cements as Adjuvant Techniques for Ossicular Chain Reconstruction

bone cement can be used to improve fixation and prevent dis-placement of an ossicular prosthesis in a guinea pig model. Background: Successful ossiculoplasty requires a firm con-nection between the vibrating tympanic membrane and the in-ner ear. In patients requiring revision ossiculoplasty, half of failures are due to prosthesis displacement. Bone cements have been used as prosthetic material in craniofacial surgery, and their adhesive and osseointegrative properties make them ideal for use in ossicular reconstruction. Methods: Twenty-four adult male guinea pigs underwent a postauricular surgical approach for access to the middle ear. Hydroxyapatite and Dahllite cements were used in an alternat-ing fashion to fix ossicular bone. Four animals were killed immediately to demonstrate mechanical bonding of the ossicles at the time of application. Nineteen animals were killed