Okwu mmalite maka ntinye hip na nnwale biomarker
Ilona Świątkowska, ... Alister J. Hart, naIhe nrịbama bio nke ọrụ ịkụnye hip, 2023
1.2.1.2 Plastic polymers
Ultra-oke-molekụla-arọpolyethylene(UHMWPE) bụ apolymer nke semirystallinena ogologo akụkọ ihe mere eme eji naorthopedicngwa, ọkachasị naacetabularliners makaTHR etinyere.Ngwa ahụ nwere ọnụ ọgụgụ dị ala nke esemokwu, ọ dakọtara, yana ọnụ ala imepụta ya.
Otú ọ dị, mgbe a na-akpakọrịta na elu ndị siri ike, UHMWPE na-ewepụta ụmụ irighiri ihe dị ka micrometer, nke nwere ike iduga.ọkpụkpụ resorptiongburugburuịkụnye(periprosthetic osteolysis),aseptic ịtọpụ(onwu nke ntinye ntinye na enweghị ọrịa), na ọdịda nrụzi mbụ.Iji belata mgbasa nke mmetụta ọjọọ ndị a, etinyela mgbalị dị ukwuu iji mee ka ogo crosslinking dị n'ime UHMWPE.
Ọgbọ nke mbụ nwere njikọ UHMWPE (HXLPE), nke ewepụtara n'ụlọ ọgwụ n'afọ ndị 1990, bụ nke a na-agbasa gamma wee hazie ya nke ọma (annealed ma ọ bụ gbazere) iji meziwanye nguzogide ha.free radicalskere n'oge irradiation.Ọ dịghị usoro ọ bụla na-arụpụta ihe zuru oke: annealing ewepụghị ihe niile free radicals, ebe remelting mere ihe na-adịghị achọpụta free radicals ma belata.kristalna mmụba dị ukwuu maka mgbawa ike ọgwụgwụ (Kurtz et al., 2011).
Iji gbalịa ilebara ihe ndọghachi azụ ndị a, ọgbọ na-esote nke HXLPE liners chọrọ iji nweta nguzogide oxidative ma na-ejigide nguzogide akwa nke ihe ọgbọ mbụ na igwe.ikenke polyethylene nkịtị;ụzọ abụọ e ji mee ihe bụ usoro irradiation na annealing, navitamin Edoping (vitamin E na-arụ ọrụ dị ka onye na-eme ihe n'efu) (D'Antonio et al., 2012; Oral na Muratoglu, 2011).
N'agbanyeghị nchegbu mbụ, HXLPE ọgbọ nke mbụ na-egosipụta ezigbo nsonaazụ redio na ogologo ndụ, ọbụlagodi na nwata ma na-arụsi ọrụ ike.ndị ọrịa(Lim et al., 2019).Ọgbọ nke abụọ HXLPE weputara nsonaazụ dị mkpụmkpụ ruo etiti etiti, mana a ga-achọ nleba anya ogologo oge iji chọpụta ma atụmatụ ndị a nwere uru ụlọ ọgwụ karịa ndị ọgbọ mbụ (Langlois na Hamadouche, 2020).
Oge nzipu: Jun-26-2023
