Clinical Studies of Uncemented Total Knee Arthroplasty (Mark III) in Rheumatoid Arthritis. Particularly as regards the Capability of Ambulation Activity and the Range of Knee Motion.:—Particularly as regards the Capability of Ambulation Activity and the R

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We performed studies on the clinical effects exerted by uncemented total knee arthroplasty (TKA) on the impairments and disabilities of severe cases of rheumatoid arthritis (RA) . The object of our survey was 60 joints of 42 MarkIII TKA cases on whom surgery was performed for severe RA, that in Steinbrocker's Stage IV, Classes 3 and 4. The postoperative periods for the cases ranged from 13 months to 5 years and 10 months, with an average followup time of 39 months. The following results were obtained:<BR>1. The average total score for the RA knee treatment results criterion of the JOA in the 60 knees was 30.4 before surgery and 68.9 at the final follow up, an improvement of about 40 points.<BR>2. There was a clear limit to the recovery from disabled ambulation.<BR>3. The ambulation disability for TKA cases on both sides was worse than that for TKA cases on one side.
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