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During the 1970’s and 1980’s, Orthopaedic Surgeons began developing and using unicondylar knee arthroplasty (UKA) for treatment of unicompartmental osteoarthritis (OA) of the knee.1 High failure rates were reported, due to poor design (mostly due to the cement loosening and plastic wear), poor surgical technique, and improper patient selection.2-5
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