کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10081936 1604098 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cracking and Impingement in Ultra-High-Molecular-Weight Polyethylene Acetabular Liners
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Cracking and Impingement in Ultra-High-Molecular-Weight Polyethylene Acetabular Liners
چکیده انگلیسی
The purpose of this study was to determine the prevalence of crack formation in conventional ultra-high-molecular-weight polyethylene cups and its association with rim impingement, oxidation, and time in situ. One hundred twenty acetabular cups were retrieved during revision total hip arthroplasty. In 40% (48/120) of the retrieved specimens, multiple subsurface cracks of several millimeters in length were revealed by transillumination. In 5 specimens, full thickness cracks led to fragmentation of the liner before revision. Thirty-eight (32%) liners had regions of moderate to severe impingement damage to the rim; cracks were initiated at the site of impingement in all but 1 liner (P < .0001). Cracks commonly occur in conventional ultra-high-molecular-weight polyethylene liners, often after neck impingement and almost always in association with oxidation of the polymer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Arthroplasty - Volume 20, Supplement 3, October 2005, Pages 87-92
نویسندگان
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