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KMID : 0616620050110010011
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Journal of Soonchunhyang Medical College
2005 Volume.11 No. 1 p.11 ~ p.16
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Duracon^(®) total Knee Arthroplasty
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Yim Soo-Jae
Park Chul-Soo
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Abstract
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Purpose : The management of patella in total knee arthroplasty is still problematic. The purpose of this study was to evaluate the changes of clinical and radiological results after total knee arthroplasty without patellar resurfacing.
Materials and Methods : We retrospective evaluated the nonresurfaced patella in 50 knees(65 patients) at an average of 77.5 months after total knee arthroplasty(Duracon^(®), Howmedica, Rutherford, NJ). Patients were diagnosed as osteoarthritis in 45 and rheumatoid arthritis in 3 and the others were osteonecrosis , and evaluated using the knee society knee score and functional knee score, modified patellar score.
Results : The mean preoperative knee society knee score in osteoarthritis and rheumatoid arthritis were 58.2 and 36.7 points, and functional score were 35.8 and 34 points. The mean postoperative knee society knee score in osteoarthritis and rheumatoid arthritis were 95.5 and 93.2 points, and functional score were 75.2 and 83 points and the mean modified patellar score was 28.5 points, and 26 cases(52%) were excellent(30 35 points, 18 cases(36%) were good(25 29 points) and 6 cases(12%) were fair(20 24 points). There were no patella associated complications and in 8 cases(16%) of anterior knee pain which resolved with conservative treatment at latest follow up.
Conclusion : Total knee arthroplasty with patelloplasty, without patellar resurfacing , provided satisfactory results without significant problems, and can avoid the complications (patellar dislocation and subluxation, fracture and component loosening, rupture of patellar and quadriceps tendon). But long term radiological and clinical follow up is recommended.
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KEYWORD
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Patella, Patelloplsty, patella resurfacing, Total knee arthroplasty
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