Mechanical characteristics of antibiotic-laden bone cement

Michael S. Armstrong, Robert F. Spencer, James L. Cunningham, Sabina Gheduzzi, Anthony W. Miles, Ian D. Learmonth

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)688-690
Number of pages3
JournalActa Orthopaedica Scandinavica
Volume73
Issue number6
DOIs
Publication statusPublished - 2002
Event5th Congress of EFORT - Rhodes, Greece
Duration: 1 Jun 2001 → …

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