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- 저자 : 정수원 ( Soo Won Jeong ) (검색결과 1 건)
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Harris-Galante 비구컵의 polyethylene liner 마모
장준동 ( Jun Dong Chang ),정수원 ( Soo Won Jeong ),최수중 ( Soo Joong Choi ),장호근 ( Ho Guen Chang ),이창주 ( Chang Ju Lee ) 대한고관절학회 1997 Hip and Pelvis Vol.9 No.2
There were many investigations about the polyethyiene wear rate and the factors which influence the wear. However, wear rate was different among studies and the factors that predispose to rapid wear are not definitely determined as well. Purposes of the study were to measure the amount and rate per year of linear wear of the polyethylene(PE) of the Harris-Galante porous(HGP) cups using the computer base technique and to evaluate the factors which influence the linear wear rate and the influence of the linear wear rate to the resu)t of the THA. Wear amount, wear direction, and cup position were measured. From the standard AP radiograph, two center points are selected at the head and the margin of the cup using a digitizer. Linear wear was defined as distance from the center of the head to the center of the outer shell. The computer system and software convert the data points after correction for magnification into two circles. The measurement of wear using the computer base technique was effective and the mean rate of linear wear was 0.15+0.18mm. Linear wear rate correlated with age, size of cup, thickness of liner, inclination of cup, and osteolysis, but not with the weight, diagnosis, sex, and site. The incidence of osteolysis of the femur was significantly higher in the cups which had 0.15mm/year of wear or more. It is necessary to observe more carefully the patients who had 0.15mm/year of wear or more. Our study aiso suggested that the alternatives of the bearing surface should be considered in younger patients.
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