WebAug 15, 2014 · The use of highly crosslinked polyethylene (HXLPE) is now commonplace for total hip arthroplasty. Hip simulator studies and short-term in vivo measurements suggest that the wear rate of some types of HXLPE is significantly less than conventional ultrahigh-molecular-weight polyethylene (UHMWPE). WebMay 7, 2024 · UHMWPE: ultra-high molecular weight polyethylene, XLPE: highly cross-linked polyethylene, SD: standard deviation. a Denotes significance of p < 0.01. With regard to radiographic parameters, UHMWPE liners exhibited a significantly higher annual wear rate (0.21 ± 0.12 mm/year) compared to XLPE liners (0.05 ± 0.03 mm/year, p = 1 × 10 −19 ).
The John Charnley Award: Highly Crosslinked Polyethylene in …
WebJan 1, 2016 · In this study, the wear rate of vitamin E-diffused, radiation cross-linked UHMWPE was 2.4 ± 0.5 mg/million cycles and 2.5 ± 0.8 mg/million cycles, respectively for the unaged 5 million cycles and the subsequent aged 3 million cycles, representing 91% and 94% decrease in wear compared to conventional UHMWPE. WebIntroduction. Highly crosslinked UHMWPE is the most commonly used bearing material in THA, consisting of 75% of the acetabular liners used in the United States as of 2008 [].Several studies show crosslinked UHMWPE has enhanced resistance to wear in hip simulator testing compared with conventional UHMWPE [8, 20, 21].The improved wear … photo to word online
UHMWPE Biomaterials Handbook - Google Books
WebMay 24, 2024 · The first part of this chapter describes the fundamental of UHMWPE crosslinking, including chemical reactions and the formation of crosslinked structures … Webannealed highly crosslinked UHMWPE with an effective re-duction in free radical concentration.16,17 However, long-term clinical retrieval studies may be necessary to determine whether oxidation occurs with in vivo use. Highly crosslinked UHMWPE acetabular inserts that have been annealed at greater than the melting temperature have WebThe thermomechanical behavior of UHMWPE was accurately predicted using an Arrhenius model, and the associated activation energies for thermal softening were related to the crystallinity of the polymers. The conventional and highly crosslinked UHMWPEs exhibited low strain rate dependence in power law relationships, comparable to metals. photo to video editing software for pc