Mechanical characteristics of antibiotic-laden bone cement


Armstrong, M. S., Spencer, R. F., Cunningham, J. L., Gheduzzi, S., Miles, A. W. and Learmonth, I. D., 2002. Mechanical characteristics of antibiotic-laden bone cement. Acta Orthopaedica Scandinavica, 73 (6), pp. 688-690.

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We studied the mechanical characteristics of cement-antibiotic combinations in vitro. Palacos R was tested without antibiotics, with gentamicin alone and with gentamicin plus vancomycin or flucloxacillin. Palacos LV was studied only with gentamicin added. CMW 1 was studied with gentamicin added, with gentamicin plus vancomycin, and with gentamicin plus flucloxacillin. We performed four-point bending tests on beams of cement to establish bending strength and modulus, and compared the values to ISO standards. Density was also assessed. Palacos R was the strongest of the cements (bending strength 80 MPa). Palacos formulations (apart from Palacos LV) had a higher density and bending modulus than CMW 1. Statistical comparison of various cements with plain Palacos R showed lower density in 4 of the mixtures, and lower bending strength and modulus in 6 of the mixtures. Palacos R/gentamicin plus vancomycin and CMW 1/gentamicin plus vancomycin had bending strength slightly above minimum ISO standards, suggesting that the addition of vancomycin during cement mixing may compromise the outcome in revision surgery for sepsis.


Item Type Articles
CreatorsArmstrong, M. S., Spencer, R. F., Cunningham, J. L., Gheduzzi, S., Miles, A. W. and Learmonth, I. D.
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
ID Code2771


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