The Mechanical Stability of Allografts After a Cleaning Process: Comparison of Two Preparation Modes
Authors/Creators
- 1. Experimental Orthopedics, Department of Orthopedics, Medical University of Innsbruck, Innsbruck, Austria
- 2. Department of Trauma Surgery, Medical University of Innsbruck, Innsbruck, Austria
Description
In revision hip arthroplasty, bone loss can be compensated by impacting allograft material. Cleaning processes
reduce the risk of bacterial and viral contamination. Cleaned allograft material was compared to native
untreated allografts by using a uniaxial compression test. 30 measurements were performed for each group
before and after compaction. Grain size distribution and weight loss were determined. A reduction in the
amount of large bone fragments and a higher compaction rate were observed in the cleaned bone grafts. The
cleaned bone chips presented with a better mechanical resistance to a compression force and a reduced
flowability. The benefit of a cleaner and a mechanical stable graft material comes with the drawback that
higher initial amounts of graft material are needed.
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