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Sensitivity to metal as a possible cause of sterile loosening after cobalt-chromium total hip-replacement arthroplasty

J Bone Joint Surg Am, 1977 Mar 01;59(2):164-168
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Abstract

We explored the possibility that wear products of cobalt-chromium alloy might lead to sensitivity to metal wear products and in turn to loosening of a component of the prosthesis after total joint replacement. Twenty patients with sterile, loose McKee-Farrar hip replacements had patch tests for sensitivity to cobalt, nickel, and chromium. All tests were negative in all patients. The histological findings from surrounding tissues in seventeen patients who had reoperation showed no signs of delayed hypersensitivity. In five patients, lymphokine assays for migration inhibition factor and blastogenic factor were done. Only one assay was positive. Our findings do not support the suggestion that hypersensitivity to metal is a cause of component loosening after McKee-Farrar total hip replacement.

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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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