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Failure analysis of the fractured wires in sternal perichronal loops.

Abstract：

:We report failure analysis of sternal wires in two cases in which a perichronal fixation technique was used to close the sternotomy. Various characteristics of the retrieved wires were compared to those of unused wires of the same grade and same manufacturer and with surgical wire specifications. In both cases, wire fracture was un-branched and transgranular and proceeded by a high cycle fatigue process, apparently in the absence of corrosion. However, stress anlysis indicates that the effective stress produced during strong coughing is lower than the yield strength. Our findings suggest that in order to reduce the risk for sternal dehiscence, the diameter of the wire used should be increased.

journal_name

J Mech Behav Biomed Mater

journal_title

Journal of the mechanical behavior of biomedical materials

authors

Chao J,Voces R,Peña C

doi

10.1016/j.jmbbm.2011.02.015

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

1004-10

issue

7

eissn

1751-6161

issn

1878-0180

pii

S1751-6161(11)00045-2

journal_volume

4

pub_type

杂志文章

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