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Acta Ortopédica Brasileira

Print version ISSN 1413-7852On-line version ISSN 1809-4406


ABREU, Marcos Felipe Marcatto de et al. Biomechanical evaluation of orthopaedic cement combined with antibiotic and methylene blue. Acta ortop. bras. [online]. 2009, vol.17, n.3, pp.162-166. ISSN 1413-7852.

OBJECTIVE: Acrylic cement has been used for years on orthopaedic surgeries, especially on knee arthroplasties, deserving special attention when added to antibiotics (for treatment of deep bone infections) or stains (to facilitate its removal). The present study was conducted in order to evaluate potential mechanical differences between the orthopaedic cement itself and when this is added to antibiotic and/or stains. METHODS: Surgical bone cement Simplex®P Stryker, vancomycin and methylene blue were used, and the mixtures were submitted to physical and mechanical tests according the ABNT NBR ISO 5833 rule. The parameters studied here were: time for mass formation, intrusion capability, resistance to compression, resistance to flexion and maximum temperature reached by the mixtures. RESULTS: The evaluated mixtures were approved as to mass formation, maximum temperature, intrusion capability and resistance to compression. Only the one containing pure cement was approved on the flexion essay. CONCLUSION: The addition of vancomycin and/or methylene blue to Surgical Simplex®P Stryker bone cement reduces its resistance to flexion, being unacceptable by the ABNT NBR ISO 5833 rule.

Keywords : Bone cements; Polymethylmetacrylate; Arthroplasty.

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