Abstract
Eighty-eight primary total knee arthroplasty procedures in 61 patients with rheumatoid arthritis were performed using the Kinematic total knee prosthesis (Howmedica, Rutherford, NJ) with cement between 1980 and 1985. No patients were lost to follow-up evaluation. Thirty-one of 61 patients died during the study period. Survivorship for all patients by life-table method was estimated as 56% at 10 years. This was shorter than the expected survival rate of a sex- and age-matched control group. Fifty procedure outcomes in 34 patients (27 women, 7 men) who were followed for more than 10 years were available for clinical evaluation. Complications occurred in 11 cases; in 4 of these, revision surgery was required. With revision as the endpoint, the survival rate of the prostheses was estimated as 93% at 10 years.
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