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The Effect of the Monomer-to-powder Ratio on the Material Properties of Acrylic Bone Cement by Stephen M. Belkoff; Janis C. Sanders; Louis E. Jasper is a Medicine article available to read on EtoBox.

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## Abstract The procedure percutaneous vertebroplasty consists of injecting polymethylmethacrylate cement into vertebral bodies for the treatment of osteoporotic compression fractures and tumors of the spine. Clinicians practicing vertebroplasty commonly alter the mixture of monomer‐to‐powder recommended by the manufacturer in an effort to decrease viscosity and increase the working time. The purpose of the current study was to measure the effect of varying the monomer‐to‐powder ratio on the compressive material properties (compressive modulus, yield stress, and ultimate compressive strength) of the cement Simplex P (Stryker‐Howmedica‐Osteonics, Rutherford, NJ). Cylindrical specimens were prepared using monomer‐to‐powder ratios of 0.45 to 1.00 mL/g and tested in compression. Peak compressive material properties occurred at the mixture ratio recommended by the manufacturer (0.5 mL/g) but decreased as the ratio of monomer to powder was increased. The material properties of specimens cured for 1 hour were significantly less than those for specimens cured for 24 hours. The monomer‐to‐powder ratio affects the compressive material properties of cement. The clinical significance of these

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Author

Stephen M. Belkoff; Janis C. Sanders; Louis E. Jasper

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); Heterocorporation; Wiley (ISSN 0021-9304)

Published

2002

Language

EN

Field

Medicine (Health Sciences)