Ossicular reconstruction using hydroxyapatite prostheses with interposed cartilage

Purpose: Despite the excellent biocompatibility of hydroxyapatite ossicular prostheses, extrusion of the prosthesis may be found during long-term follow-up, mainly due to the retraction of the eardrum. Although interposition of autologous cartilage between the eardrum and the prosthesis is empirical...

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Bibliographic Details
Published in:American journal of otolaryngology 2002-07, Vol.23 (4), p.222-227
Main Authors: Kobayashi, Taisuke, Gyo, Kiyofumi, Shinohara, Takayuki, Yanagihara, Naoaki
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Biocompatible Materials
Biological and medical sciences
Cartilage - transplantation
Child
Durapatite
Follow-Up Studies
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
Hearing
Humans
Medical sciences
Middle Aged
Ossicular Prosthesis
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the ear, the auditive nerve and the facial nerve
Technology. Biomaterials. Equipments
Transplantation, Autologous
Treatment Outcome
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Summary:Purpose: Despite the excellent biocompatibility of hydroxyapatite ossicular prostheses, extrusion of the prosthesis may be found during long-term follow-up, mainly due to the retraction of the eardrum. Although interposition of autologous cartilage between the eardrum and the prosthesis is empirically used to prevent extrusion, the clinical effect of this procedure has not been confirmed. The purpose of this study was to evaluate the effect of interposing a cartilage on the extrusion rate and hearing outcome. Materials and Methods: Fifty-four ears in which cartilage was interposed with a hydroxyapatite prosthesis were compared with 53 ears without interposition. Three years after surgery, the otoscopic findings and hearing outcome were evaluated. Results: The extrusion rate was 1.9% in the group with interposition and 13.2% in the group without interposition. The difference between the two groups was statistically different (X2 = 4.986; P =.03). There was no significant difference between the two groups in the postoperative air-bone gap. Conclusion: This procedure is an effective method for reducing the extrusion rate of hydroxyapatite prostheses without reducing the hearing gain resulting from ossiculoplasty. (Am J Otolaryngol 2002;23:222-227. Copyright 2002, Elsevier Science (USA). All rights reserved.)
ISSN:0196-0709
1532-818X
DOI:10.1053/ajot.2002.124191