In Vivo Performance of the Nitinol Shape-Memory Stapes Prosthesis During Hearing Restoration Surgery in Otosclerosis: A First Report

Gunesh Rajan, Robert Eikelboom, K.S. Anandacoomaraswarmy, Marcus Atlas

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The limitations of manual prosthesis crimping in hearing restoration surgery forotosclerosis are thought to have a key role in the occurrence of incomplete postoperativeelimination of conductive hearing loss and postoperative recurrences of conductive hearingloss. To eliminate manual crimping, the self-crimping, shape-memory alloy Nitinol stapespiston was introduced in nine otosclerosis patients. The results were compared with those ina database of surgeries performed with conventional titanium pistons. The effects of theself-crimping Nitinol prosthesis on the postoperative elimination of conductive hearing lossand its postoperative variations were investigated. The variations of postoperative residualconductive hearing loss were significantly smaller and the extent of conductive hearing-losselimination greater in the Nitinol group. The mean postoperative residual conductive hearingloss was smaller in the Nitinol group. The postoperative stability of conductive hearing losselimination was similar in both patient groups. Preliminary results suggest that the selfcrimpingshape-memory alloy Nitinol stapes piston overcomes the drawbacks of manualcrimping in hearing restoration surgery for otosclerosis. © 2004 Wiley Periodicals, Inc. J BiomedMater Res Part B: Appl Biomater 72B: 305–309, 2005
Original languageEnglish
Pages (from-to)305-309
JournalJournal of Biomedical Materials Research Part B: Applied Biomaterials
Volume72B
Issue number2
DOIs
Publication statusPublished - 2005

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