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.
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.
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|Item Type:||Conference Paper|
|Keywords:||short femoral stem, fracture load, stress shielding, biomechanical study, sawbones|
|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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