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器官移植长期效应期刊

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ISSN 打印: 1050-6934

ISSN 在线: 1940-4379

SJR: 0.184 SNIP: 0.485 CiteScore™:: 1.1 H-Index: 39

Indexed in

Very Large Diameter Polymer Acetabular Liners Show Promising Wear Simulator Results

卷 26, 册 4, 2016, pp. 311-319
DOI: 10.1615/JLongTermEffMedImplants.2017019182
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摘要

Thinner and larger acetabular components are more stable and are useful for resurfacing. This study performed wear simulator tests of the largest polyurethane (PUR) and highly cross-linked polyethylene (XLPE) liners available. The results were compared with conventional polyethylene (ConvPE) to determine wear, survivorship, wear debris particles generated, and oxidative degradation.
Two-piece acetabular components with a 4-mm poly liner, a 2-mm metal backing, and 1 mm of porous coating with an inner diameter of 51 mm were tested. Cobalt chromium (CoCr) and titanium nitride (TiN)-coated titanium- resurfacing femoral components were counter-face surfaces. Acetabular components were tested at 45° and 65° inclinations, with both 300 μm and an increase of 1 mm in radial clearance.
After 30 million cycles, PUR had 56% (p < 0.001) less wear and cross-linked had 93% (p < 0.001) less wear than ConvPE. TiN-coated femoral implants had 23% less wear than CoCr when used with cross-linked polyethylene. Wear increased by 16% at 65° and by 19% when radial clearance increased with cross-linked polyethylene. Polymethylmethacrylate debris ultimately failed ConvPE, but not the cross-linked polyethylene or PUR. XLPE acetabular liners are compatible with >20 years of expected use in active patients.

对本文的引用
  1. Pritchett James W, Hip resurfacing with a highly cross-linked polyethylene acetabular liner and a titanium nitride-coated femoral component, HIP International, 28, 4, 2018. Crossref

  2. Pritchett James W., Hip resurfacing in patients with severe osteoarthritis and blocked medullary canal, HIP International, 2018. Crossref

  3. Pritchett James W., Polyethylene Hip Resurfacing to Treat Arthritis and Severe Acetabular Insufficiency, The Journal of Arthroplasty, 33, 11, 2018. Crossref

  4. Pritchett James W., Adventure sports and sexual freedom hip replacement: the tripolar hip, European Journal of Orthopaedic Surgery & Traumatology, 28, 1, 2018. Crossref

  5. K.N. Chethan, Zuber Mohammad, Bhat N. Shyamasunder, Shenoy B. Satish, R. Kini Chandrakant, Static structural analysis of different stem designs used in total hip arthroplasty using finite element method, Heliyon, 5, 6, 2019. Crossref

  6. Saikko Vesa, Wear and friction of thin, large-diameter acetabular liners made from highly cross-linked, vitamin-E-stabilized UHMWPE against CoCr femoral heads, Wear, 432-433, 2019. Crossref

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