Hoʻomaka i nā implants hip a me ka hoʻāʻo biomarker
Ilona Świątkowska, ... Alister J. Hart, maBiomarkers o ka Hip Implant Function, 2023
1.2.1.2 Polimer plastik
Ultra-high-molecular-kaumahapolyethylene(UHMWPE) hepolimer semirystallineme ka mōʻaukala lōʻihi o ka hoʻohana maorthopedicnā noi, ʻoi loa maacetabularlaina laina noTHR implants.He haʻahaʻa ka haʻahaʻa o ka friction o ka mea, biocompatible, a maʻalahi hoʻi e hana.
Eia naʻe, ke hoʻopili ʻia me nā ʻili paʻakikī, hoʻokuʻu ʻo UHMWPE i nā ʻāpana micrometre-nui, hiki ke alakaʻi ihoʻopaʻa iwia puni kaimplant(periprosthetic osteolysis),aseptic loosening(nalo o ka implant fixation i ka nele o ka ma'i), a me ka hiki ole mechanical.No ka ho'ēmiʻana i ka laha o kēia mau hopena ʻino, ua hoʻoikaika nui ʻia e hoʻonui i ke kiʻekiʻe o ka hoʻopili ʻana i loko o ka UHMWPE.
ʻO nā laina laina UHMWPE (HXLPE) o ka hanauna mua loa, i hoʻokomo ʻia i loko o nā makahiki 1990, ua hoʻomālamalama ʻia ka gamma a laila ua hoʻoheheʻe ʻia (annealed a remelted) e hoʻomaikaʻi i ko lākou kūʻē ʻanamanuahi manuahii hana ʻia i ka wā o ka irradiation.ʻAʻole i loaʻa i nā kaʻina nā hopena maikaʻi loa: ʻaʻole hiki i ka annealing ke hoʻopau i nā radical manuahi a pau, ʻoiai ʻo ka hoʻoheheʻe ʻana i hopena i kahi mea me nā radical manuahi hiki ʻole ke ʻike ʻia akā ua hoʻemi ʻia.crystallinitya me ka hoʻonui ʻana i ka maʻalahi o ka luhi luhi (Kurtz et al., 2011).
No ka hoʻāʻo e hoʻoponopono i kēia mau drawbacks, ʻo ka hanauna hou o HXLPE liners e manaʻo e hoʻokō i ka pale oxidative ʻoiai e mālama ana i ka pale lole kiʻekiʻe o ka mea hana mua a me ka mīkini.ikaikao ka polyethylene maʻamau;ʻO nā ala ʻelua i hoʻohana ʻia he sequential irradiation a me annealing, avitamina Edoping (hana ka huaora E ma ke ʻano he scavenger free-radical) (D'Antonio et al., 2012; Oral and Muratoglu, 2011).
ʻOiai nā hopohopo mua, hōʻike ʻo HXLPE i ka hanauna mua i nā hopena radiographic maikaʻi loa a me ka lōʻihi o ke ola, ʻoiai i ka ʻōpio a me ka ikaika.nā maʻi(Lim et al., 2019).Hāʻawi ka lua o ka HXLPE i nā hopena pōkole a i waena, akā e koi ʻia ka hahai ʻana i ka wā lōʻihi e ʻike inā loaʻa kēia mau hoʻolālā i ka pono lapaʻau ma mua o nā laina o ka hanauna mua (Langlois a me Hamadouche, 2020).
Ka manawa hoʻouna: Iune-26-2023
