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Relation of surface area to in vitro elution characteristics of vancomycin-impregnated polymethylmethacrylate spacers. 1998

P D Holtom, and C A Warren, and N W Greene, and P D Bravos, and R L Ressler, and L Shepherd, and E J McPherson, and M J Patzakis
Department of Clinical Medicine and Orthopaedics, University of Southern California, Los Angeles, USA.

To study the relationship between surface area and antibiotic elution from antibiotic-impregnated polymethylmethacrylate (PMMA) spacers, a standard block spacer made of vancomycin (4 g) and 40 g of PMMA was compared with two unique spacer designs, the "donut" and "fenestrated." The spacers were incubated in phosphate-buffered saline, which was changed daily, and a microbiologic assay was used to measure the antibiotic activity of the eluates. The donut and fenestrated spacers had 12% and 40% more surface area than the standard spacer, respectively. There was no significant difference, however, in daily elution levels of antibiotic between the donut spacer and the standard spacer. The fenestrated spacer displayed significantly better elution than either the standard or donut spacers, with an average of 20% more antibiotic eluted on any given day.

UI MeSH Term Description Entries
D008768 Methylmethacrylates The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.
D009983 Orthopedic Equipment Nonexpendable items used in the performance of orthopedic surgery and related therapy. They are differentiated from ORTHOTIC DEVICES, apparatus used to prevent or correct deformities in patients. Equipment, Orthopedic,Equipments, Orthopedic,Orthopedic Equipments
D014640 Vancomycin Antibacterial obtained from Streptomyces orientalis. It is a glycopeptide related to RISTOCETIN that inhibits bacterial cell wall assembly and is toxic to kidneys and the inner ear. AB-Vancomycin,Diatracin,VANCO-cell,Vanco Azupharma,Vanco-saar,Vancocin,Vancocin HCl,Vancocine,Vancomicina Abbott,Vancomicina Chiesi,Vancomicina Combino Phar,Vancomicina Norman,Vancomycin Hexal,Vancomycin Hydrochloride,Vancomycin Lilly,Vancomycin Phosphate (1:2),Vancomycin Phosphate (1:2), Decahydrate,Vancomycin Sulfate,Vancomycin-ratiopharm,Vancomycine Dakota,Hydrochloride, Vancomycin,Sulfate, Vancomycin
D019736 Prostheses and Implants Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally. Implants, Artificial,Prostheses and Implant,Prosthesis,Prosthetic Implant,Endoprostheses,Endoprosthesis,Prostheses,Prosthetic Implants,Artificial Implant,Artificial Implants,Implant and Prostheses,Implant, Artificial,Implant, Prosthetic,Implants and Prostheses,Implants, Prosthetic

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