ＭＧ　ＩＩ型人工膝関節の中長期成績

概要

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Sixty-seven knees in 46 patients with the Miller-Galante II knee prosthesis were evaluated after a follow-up period of 9.1 years (range: 6.3 to 11.4 years). The average age of the patients at the time of surgery was 69.7 years (range: 48 to 82 years). The primary diagnoses were osteoarthritis in 56 knees (40 patients) and rheumatoid arthritis in 11 knees (6 patients). One knee arthroplasty failed because of osteolysis beneath the posterior femoral flange. The JOA score and radiographs were obtained in the remaining 66 knees in 45 patients. The average JOA score was 81.6 points for osteoarthritis and 83.2 points for rheumatoid arthritis in the final follow-up. There was no significant difference in the tibiofemoral angle, the relative position of components, patellar tilt, and lateral shift at four weeks after surgery and in the latest follow-up. Patellar component wear, typically seen in the Miller-Galante I prosthesis, was not observed. Survival curve showed 99% survival at 10 years for all knees. The Miller-Galante II knee prosthesis provided excellent clinical results in the intermediate follow-up. However, in the uncemented 38 knees, the incidences of osteolysis and radiolucent lines of tibial components were significantly higher than those of cemented 28 knees.
西日本整形・災害外科学会の論文