Rau cov neeg mob uas tab tom yuav hloov lub duav los yog tab tom xav txog kev hloov lub duav yav tom ntej, muaj ntau yam kev txiav txim siab tseem ceeb. Ib qho kev txiav txim siab tseem ceeb yog kev xaiv ntawm cov khoom siv txhawb nqa qhov chaw rau kev sib koom ua ke: hlau-ntawm-hlau, hlau-ntawm-polyethylene, ceramic-on-polyethylene, lossis ceramic-on-ceramic. Qee zaum, qhov no tuaj yeem yog qhov teeb meem!
Kev phais tag nrho lub duav tuaj yeem siv los hloov cov pob qij txha pob qij txha, siv cov pob qij txha pob txha kom tshem tawm qhov mob tshwm sim los ntawm kev txhuam hniav.
Artificial sib koom prostheses yog tsim los muab cov neeg mob muaj kev ruaj ntseg ntau dua thiab hnav thiab tsim kua muag tsawg. Kev cog qoob loo ntawm cov hlau thiab polyethylene tau siv txij li xyoo 1960, tab sis kev nce qib hauv kev siv thev naus laus zis tau ua rau cov khoom siv ceramic thiab lwm yam khoom nrov.
Hip joint hloov cov khoom siv cog
Ib qho teeb meem tshwm sim tom qab hloov lub duav yog qhov hnav thiab tsim kua muag ntawm kev sib koom tes prosthesis los ntawm kev siv ib txwm. Nyob ntawm tus neeg mob qhov xwm txheej tshwj xeeb, xws li hnub nyoog, qhov loj me, theem kev ua haujlwm, thiab tus kws kho mob qhov kev paub txog kev cog hniav tshwj xeeb, lub duav hloov prosthesis yuav ua los ntawm hlau, polyethylene (yas), lossis ceramic. Piv txwv li, yog tias tus neeg mob nquag nquag lossis tseem hluas thiab xav tau kev txav mus los tom qab kev phais mob, tus kws phais orthopedic yuav pom zoo kom muab cov pob txha pob txha.
1,Hlau pob taub hauthiab polyethylene (yas) hauv ob sab phlu.
Cov pob hlau txheem thiab polyethylene khob liner tau siv txij li thaum xyoo 1960s. Kev tshawb fawb tshawb fawb pom tau hais tias kev siv cov polyethylene zoo dua li cov ntaub pua tsev, hu ua "hloov sib txuas" polyethylene liners, tuaj yeem txo qhov hnav tag nrho ntawm kev cog qoob loo. Vim nws cov kav ntev thiab lwm yam khoom muaj feem xyuam, nws yog xim hlau polyethylene yog cov khoom xaiv rau cov kws phais orthopedic rau cov khoom siv dag zog txij li thawj zaug kev phais hloov dua siab tshiab tau ua. Lub pob hlau yog ua los ntawm cobalt-chromium alloy thiab hauv ob sab phlu yog ua los ntawm polyethylene.
2,Ceramic pob taub hauthiab polyethylene (yas) hauv ob sab phlu
Ceramic cov lus qhia yog qhov nyuaj tshaj li cov hlau thiab yog cov khoom siv cog qoob loo zoo tshaj plaws. Ceramics tam sim no siv nyob rau hauv kev sib koom tes kev phais muaj ib qho nyuaj, khawb-resistant, ultra-nqus nto uas yuav txo tau tus nqi ntawm polyethylene kev sib txhuam interfaces. Lub peev xwm hnav tus nqi ntawm qhov cog cog no qis dua qhov muaj peev xwm hnav tus nqi ntawm cov hlau ntawm polyethylene.
3、 Hlau pob taub hau thiab hlau liner
Hlau-on-hlau sib txhuam interfaces (cobalt-chromium alloys, qee zaum stainless hlau) tau siv thaum ntxov li xyoo 1955, tab sis tsis tau txais kev pom zoo los ntawm FDA rau kev siv hauv Tebchaws Meskas txog xyoo 1999. Raws li kev siv thev naus laus zis, hnav tau txo qis, ua rau muaj mob tsawg thiab cov pob txha. Hlau bearings muaj nyob rau hauv ntau qhov ntau thiab tsawg (xws li 28mm txog 60mm), nrog rau ntau hom kev xaiv ntev caj dab. Txawm li cas los xij, cov ntaub ntawv qhia txog kev ua haujlwm ntev ntev qhia tau hais tias cov hlau, uas yog ib qho tseem ceeb ion, khaws cov khib nyiab hlau vim kev hnav thiab tsim kua muag ntev, uas tuaj yeem ua rau cov pob txha tawg nyob ib ncig ntawm cov pob qij txha, thaum kawg ua rau xoob thiab deformation ntawm kev sib koom tes prosthesis. Kev ua haujlwm ua tsis tiav.
4、 Ceramic pob taub hau thiabceramic hauv ob sab phlu
Nyob rau hauv cov hips no, cov khoom siv hlau tsoos thiab polyethylene liner tau hloov los ntawm cov khoom siv hluav taws xob muaj zog, uas paub txog lawv cov khoom siv ultra-low-wear. Txawm li cas los xij, thaum muaj qhov zoo ntawm kev ua tau zoo thiab tsis tshua muaj hnav, lawv kuj inevitably muaj qhov tsis zoo ntawm tus nqi siab.
Qhov kev xaiv zaum kawg ntawm kev cog hniav yuav raug txiav txim siab raws li tus neeg mob cov yam ntxwv tshwj xeeb ntawm kev noj qab haus huv thiab tseem yuav xav tau tus kws kho mob orthopedic cov kws tshaj lij, kev kawm, thiab kev txawj ntse los kho cov khoom lag luam tshwj xeeb. Yog li ntawd, nws yog ib qho tsim nyog los tham nrog koj tus kws kho mob orthopedic ua ntej kev phais kom nkag siab txog hom kev cog hniav uas lawv npaj siab yuav siv rau koj qhov kev phais hloov lub duav, thiab cov laj thawj ntawm kev xaiv ib qho cog cog.
Post lub sij hawm: Jan-18-2024