Fracture load for short versus standard cemented hip stems : an experimental in vitro study

Morishima, Takkan, Ginsel, Bastiaan, Choy, Godwin, Wilson, Lance, Whitehouse, Sarah, & Crawford, Ross (2013) Fracture load for short versus standard cemented hip stems : an experimental in vitro study. In Orthopaedic Proceedings, British Editorial Society of Bone & Joint Surgery, Florida, USA, p. 436.

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Abstract

Introduction: In an attempt to reduce stress shielding in the proximal femur multiple new shorter stem design have become available. We investigated the load to fracture of a new polished tapered cemented short stem in comparison to the conventional polished tapered Exeter stem.

Method: A total of forty-two stems, twenty-one short stems and twenty-one conventional stems both with three different offsets were cemented in a composite sawbone model and loaded to fracture.

Results: study showed that femurs will break at a significantly lower load to failure with a shorter compared to conventional length Exeter stem.

Conclusion: This Both standard and short stem design are safe to use as the torque to failure is 7–10 times as much as the torques seen in activities of daily living.

Impact and interest:

6 citations in Web of Science®
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ID Code: 75538
Item Type: Conference Paper
Refereed: Yes
Keywords: short femoral stem, fracture load, stress shielding, biomechanical study, sawbones
ISSN: 2049-4416
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > CLINICAL SCIENCES (110300) > Orthopaedics (110314)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 25 Aug 2014 22:45
Last Modified: 26 Aug 2014 23:34

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