Rau cov neeg mob uas tab tom yuav hloov pob qij txha lossis tab tom xav txog kev hloov pob qij txha yav tom ntej, muaj ntau qhov kev txiav txim siab tseem ceeb uas yuav tsum tau ua. Ib qho kev txiav txim siab tseem ceeb yog kev xaiv qhov chaw txhawb nqa prosthetic rau kev hloov pob qij txha: hlau-rau-hlau, hlau-rau-polyethylene, ceramic-rau-polyethylene, lossis ceramic-rau-ceramic. Qee zaum, qhov no tuaj yeem yog qhov teeb meem!
Kev phais hloov lub duav tag nrho siv tau los hloov lub pob qij txha uas mob pob qij txha, siv cov khoom cuav los kho cov pob qij txha kom tshem tawm qhov mob uas tshwm sim los ntawm kev sib txhuam ntawm cov nplaim.
Cov pob qij txha cuav yog tsim los kom cov neeg mob muaj kev ruaj khov dua thiab tsis tshua muaj kev puas tsuaj. Cov hlau thiab polyethylene cog rau hauv cov pob qij txha ib txwm muaj tau siv txij li xyoo 1960, tab sis kev nce qib hauv thev naus laus zis tau ua rau cov khoom siv ceramic thiab lwm yam khoom siv tau nrov zuj zus.
Cov khoom siv hloov pauv pob qij txha
Ib qho teeb meem feem ntau tom qab hloov lub duav yog qhov hnav thiab rhuav ntawm cov pob qij txha prosthesis los ntawm kev siv ib txwm muaj. Nyob ntawm tus neeg mob qhov xwm txheej tshwj xeeb, xws li hnub nyoog, qhov loj me, qib kev ua ub no, thiab tus kws phais mob qhov kev paub dhau los nrog cov khoom cog tshwj xeeb, cov khoom hloov duav prosthesis yuav ua los ntawm hlau, polyethylene (yas), lossis ceramic. Piv txwv li, yog tias tus neeg mob muaj zog heev lossis tseem hluas thiab xav tau kev txav mus los siab tom qab phais mob, tus kws phais pob txha yuav pom zoo kom siv cov khoom cog ceramic rau lub duav.
1,Lub taub hau pob hlauthiab polyethylene (yas) sab hauv.
Cov pob hlau txheem thiab cov hnab yas polyethylene tau siv txij li thaum xyoo 1960. Kev tshawb fawb qhia tau hais tias kev siv cov hnab yas polyethylene zoo dua, hu ua "highly cross-linked" polyethylene liners, tuaj yeem txo qhov hnav ntawm cov hniav cuav. Vim nws lub zog thiab lwm yam khoom zoo sib xws, cov polyethylene hlau tau yog cov khoom siv xaiv rau cov kws phais pob txha rau cov khoom cuav ntawm lub duav txij li thawj zaug phais hloov lub duav tau ua tiav. Lub pob hlau yog ua los ntawm cobalt-chromium alloy thiab lub hauv paus yog ua los ntawm polyethylene.
2,Lub taub hau pob ceramicthiab polyethylene (yas) sab hauv
Cov taub hau ceramic nyuaj dua hlau thiab yog cov khoom siv cog hniav uas tiv taus khawb tshaj plaws. Cov ceramics uas siv rau hauv kev phais hloov pob qij txha tam sim no muaj cov nto tawv, tiv taus khawb, thiab du heev uas tuaj yeem txo qhov kev hnav ntawm cov polyethylene sib txhuam interfaces. Qhov kev hnav ntawm cov khoom cog hniav no qis dua qhov kev hnav ntawm cov hlau ntawm polyethylene.
3, Lub taub hau pob hlau thiab lub liner hlau
Cov hlau sib txhuam sib txuas (cobalt-chromium alloys, qee zaum stainless hlau) tau siv thaum ntxov li xyoo 1955, tab sis FDA tsis tau pom zoo rau kev siv hauv Tebchaws Meskas txog xyoo 1999. Raws li thev naus laus zis nce qib, kev hnav tau txo qis heev, ua rau muaj kev o thiab pob txha poob tsawg dua. Cov kabmob hlau muaj ntau qhov ntau thiab tsawg (xws li 28mm txog 60mm), nrog rau ntau yam kev xaiv ntev ntawm caj dab. Txawm li cas los xij, cov ntawv ceeb toom tom qab phais ntev qhia tias hlau, ua ib qho ion nquag, khaws cov hlau khib nyiab vim yog kev hnav thiab tsim kua muag ntev, uas tuaj yeem ua rau pob txha yaj nyob ib puag ncig cov pob qij txha prosthesis, thaum kawg ua rau loosen thiab deformation ntawm cov pob qij txha prosthesis. Kev phais tsis ua tiav.
4, Lub taub hau pob ceramic thiabcov ntaub pua plag hauv pem teb
Hauv cov pob no, cov pob hlau ib txwm muaj thiab cov polyethylene liners tau hloov los ntawm cov khoom siv ceramics muaj zog heev, uas paub txog lawv cov khoom siv hnav tsawg heev. Txawm li cas los xij, thaum muaj qhov zoo ntawm qhov zoo thiab hnav tsawg, lawv kuj muaj qhov tsis zoo ntawm tus nqi siab.
Qhov kev xaiv kawg ntawm kev cog hniav yuav raug txiav txim siab raws li tus neeg mob cov yam ntxwv kev noj qab haus huv tshwj xeeb thiab tseem yuav xav tau tus kws phais pob txha txoj kev txawj ntse, kev kawm, thiab kev txawj ntse los kho cov khoom tsim tshwj xeeb. Yog li ntawd, nws yog ib qho tsim nyog los tham nrog koj tus kws phais pob txha ua ntej phais kom nkag siab txog hom kev cog hniav uas lawv npaj siab siv rau koj qhov kev phais hloov pob txha, thiab cov laj thawj rau kev xaiv kev cog hniav tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Ib Hlis-18-2024