変形性膝蓋大腿関節症に対するMEDICARBによるbiological resurfacingの臨床成績

―5年以上経過例の評価―

抄録

From August 1990 to September 1992, the patellofemoral joints of 12 osteoarthritis knees were resurfaced using Medicarb mesh and rods, which are made of carbon fiber material. All patients were reviewed in 1997. The age of patients at surgery was 44 to 75 year old; mean follow-up time was 5.9 years. The mean hospitalization period was approximately 4 weeks. Pain and crepitus of the patellofemoral joint diminished or decreased in all patients soon after surgery, and desired effects of treatment continued at follow-up. The mean preoperative JOA score of 71.3±8.8 points improved to 86.7±3.9 at 5 years after surgery. X-ray examination revealed that 2 of 12 knees regained joint space on the skyline view. No major complications were found but moderate joint effusion of one knee was noted. The knee needed several aspirations and stabilized at one year after surgery. Our encouraging clinical results show that this procedure, patellofemoral resurfacing using Medicarb mesh and rods, is a good indication for treatment of elderly patients with patellofemoral osteoarthritis.