کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4063701 | 1604075 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Comparison of Hip Simulator Wear of 2 Different Highly Cross-linked Ultra High Molecular Weight Polyethylene Acetabular Components Using Both 32- and 38-mm Femoral Heads Comparison of Hip Simulator Wear of 2 Different Highly Cross-linked Ultra High Molecular Weight Polyethylene Acetabular Components Using Both 32- and 38-mm Femoral Heads](/preview/png/4063701.png)
Much evidence suggests that ultra high molecular weight polyethylene (UHMWP) irradiated to 9.5 Mrad has lower wear than UHMWP given 5 Mrad. Curiously, highly cross-linked polyethylenes gain weight during hip simulator testing. We postulated that (a) UHMWP irradiated to 9.5 Mrad would wear less than UHMWP irradiated to 5 Mrad UHMWP, (b) articulation against 38-mm heads would accentuate this difference, and (c) weight gain of highly cross-linked material reflects the inadequacy of load soak controls. We compared 9.5 versus 5 Mrad polyethylene in hip simulator wear tests, with both load soak corrections and with novel “motion soak” corrections. The 9.5-Mrad material wore less than 5-Mrad material for 32- and 38-mm heads. Motion soak corrections were more accurate than load soak corrections.
Journal: The Journal of Arthroplasty - Volume 22, Issue 4, June 2007, Pages 581–589