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Hydroxylapatite ossicular replacement prostheses: Preliminary results
Author(s) -
Godenberg Robert A.
Publication year - 1990
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-199007000-00004
Subject(s) - incus , hydroxylapatite , prosthesis , stapes , medicine , dentistry , stapedectomy , surgery , middle ear , otosclerosis , biology , biochemistry , enzyme
Abstract Hearing results and extrusion rate for 89 consecutive patients receiving hydroxylapatite prostheses for hearing reconstruction were evaluated and compared to a control group of 75 patients who had received homograft bone or Plasti‐Pore® prostheses. At the 3‐month follow‐up, there were no cases of extrusion of the hydroxylapatite pros‐theses. Hearing success was defined as a postoperative air‐bone gap of≤ 15 dB for incus prostheses and partial ossicular replacement prostheses or ≤25 dB for incus‐stapes pros‐theses and total ossicular replacement prostheses. There was a statistically significant difference in the distribution‐of‐success rate by prosthesis type for the hydroxylapatite. Incus, incus‐stapes, and total ossicular replacement prosthesis results were similar, but partial ossicular replacement prosthesis results were poorer. The overall success rate in the hydroxylapatite group was 51.2%; in the control group, it was 60%. Hearing results tended to be better with the hydroxylapatite incus prosthesis than with the homo‐graft bone incus, but poorer with the hydroxylapatite partial ossicular replacement prosthesis than with the Plasti‐Pore. Several technical modifications of the prosthesis that may improve results with the hydroxylapatite partial ossicular replacement prosthesis are suggested. Hydroxylapatite middle ear prostheses appear to be a reasonable alternative to other more commonly used pros‐theses, which carry disadvantages related to the use of human tissue.