A reduced-modulus acrylic bone cement: preliminary results.

A S Litsky; R M Rose; C T Rubin; E L Thrasher

doi:10.1002/jor.1100080420

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A reduced-modulus acrylic bone cement: preliminary results.

A S Litsky·R M Rose·C T Rubin·E L Thrasher

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Abstract

Excessive local contact stress is implicated as an important factor in the initiation of the loosening process after total joint arthroplasties. A reduced-modulus acrylic bone cement, which decreases the bone-cement interface stresses, was developed to test this hypothesis. The formulation consists of butylmethacrylate beads, having a glass transition temperature of 27 degrees C, in a methylmethacrylate matrix. This cement, polybutylmethylmethacrylate (PBMMA), has an elastic modulus one-eighth that of standard PMMA bone cement, 0.27 vs. 2.1 GPa, at body temperature. In vivo use in a pilot study using the sheep total hip arthroplasty model shows a reduction in the rate of loosening of femoral components when compared both radiographically and mechanically with PMMA controls.

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Acrylic Resins Animals Biomechanical Phenomena Bone Cements Bone Diseases Bone and Bones Female Models, Biological Radiography Sheep Stress, Mechanical Torsion Abnormality Journal Article Research Support, Non-U.S. Gov't

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A S Litsky, R M Rose, C T Rubin, E L Thrasher. 1990. A reduced-modulus acrylic bone cement: preliminary results.. https://doi.org/10.1002/jor.1100080420

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