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In vitro analysis of Exeter stem torsional stability

Bell, Cameron G., Weinrauch, Patrick C., Pearcy, Mark J., & Crawford, Ross W. (2007) In vitro analysis of Exeter stem torsional stability. Journal of Arthroplasty, 22(7), pp. 1024-1030.

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Abstract

The effect of cyclic loading on the torsional stiffness of a polished double tapered femoral stem was investigated in vitro. Initial torsional stability was compared to torsional stability following cyclic loading. Stems were removed from the cement mantle and reinserted without the use of additional cement. Torsional stability was measured following reinsertion and following further cyclic loading.

Subsidence of the stem was observed. No difference in torsional stiffness was observed during loading. No difference between the stiffness prior to extraction and following reinsertion was observed.

Torsional stiffness of an Exeter stem does not decrease following axial subsidence under cyclic loading. Stability is retained following reinsertion into the original cement mantle. Debonding of the Exeter stem is not associated with rotational instability of the implant.

Impact and interest:

3 citations in Scopus
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1 citations in Web of Science®

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238 since deposited on 09 Oct 2007
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ID Code: 6679
Item Type: Journal Article
Keywords: torsional stiffness, polished double taper, debonding
DOI: 10.1016/j.arth.2007.03.012
ISSN: 0883-5403
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomedical Engineering not elsewhere classified (090399)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Rehabilitation Engineering (090305)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2007 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 09 Oct 2007
Last Modified: 29 Feb 2012 23:35

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