Clinical Evaluation of Yamamoto-MarkIII Total Knee Replacement.

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We have studied clinically and radiologically the short-term results of Yamamoto-Mark III total knee replacement in 29 patients (38 knees) with rheumatoid arthritis (16 patients, 23 knees) and osteoarthritis (13 patients, 15 knees) . The mean age of patients at surgery was 65.0 years (50 to 81) and the mean period of follow-up was 32.6 months (6 to 67) . Clinical assessment was made using the three universities' knee rating score. The femorotibial angle and the setting position of the components were observed on postoperative serial radiographs and were evaluated by Ueo's radiological scoring system.<BR>The following results were obtained: 1) The mean clinical score improved from 42.9 to 73.1. 2) The insertion angle of the components was variable and the mean radiological score was 68.5. 3) There was no significant positive correlation between clinical scores and radiological scores. 4) In general the short-term results were satisfactory.
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