Correlation between impact strength and fracture toughness of PMMA-based bone cements.
biomechanical · Level V
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- Record sourced from PubMed, PMID 10721746.
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Abstract
The thrust of the work involved determining the impact strength, IS (in kJ m(-2)) [using non-ASTM-sized Charpy-type specimens and an in-house impact tester] and fracture toughness, K1c (in MPa square root(m)) [using ASTM-sized rectangular compact tension specimens] of Surgical Simplex P and three variants of Palacos R acrylic bone cements. The attractions and drawbacks of this method for determining IS are detailed. The best fit to the K1c and IS results yielded a power relationship K1c = 0.795(IS)(0.59). The usefulness and limitations of this relationship are detailed.
Medical subject headings
- Bone Cements
- Polymethyl Methacrylate