Lub duav hloov prosthesis ntev npaum li cas?

Hip arthroplasty yog ib txoj kev phais zoo dua rau kev kho mob ntawm femoral taub hau necrosis, osteoarthritis ntawm lub duav pob qij txha, thiab pob txha ntawm cov pob txha.femoralcaj dab nyob rau hauv lub hnub nyoog advanced. Hip arthroplasty tam sim no yog ib txoj kev paub tab uas maj mam tau txais koob meej thiab tuaj yeem ua tiav txawm tias qee lub tsev kho mob nyob deb nroog. Nrog rau kev nce ntawm cov neeg mob hloov lub duav, cov neeg mob feem ntau txhawj xeeb txog ntev npaum li cas cov prosthesis yuav kav ntev npaum li cas tom qab kev phais hloov lub duav thiab seb nws puas yuav kav mus ib txhis. Qhov tseeb, ntev npaum li cas ntawm kev hloov lub duav tuaj yeem siv tau tom qab kev phais yog nyob ntawm peb yam tseem ceeb: 1, kev xaiv ntawm cov ntaub ntawv: tam sim no muaj peb yam khoom tseem ceeb rau cov pob qij txha pob txha: ① ceramic taub hau + ceramic khob: tus nqi yuav kuj siab. Lub ntsiab kom zoo dua ntawm kev sib xyaw ua ke no yog tias nws yog qhov hnav-resistant ntau dua. Nyob rau hauv lub ceramic thiab ceramic kev sib txhuam, tib lub load, hnav thiab kua muag txheeb ze rau cov hlau interface yog ntau me me, thiab cov me me hais nyob rau hauv lub sib koom kab noj hniav vim hnav thiab tsim kua muag kuj tsis tshua muaj heev me me, yeej yuav tsis muaj lub cev rejection tiv thaiv hnav hais. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv ntawm kev ua haujlwm hnyav lossis lub cev tsis zoo, muaj qhov pheej hmoo me me ntawm ceramic rupture. Kuj tseem muaj tsawg tus neeg mob uas muaj lub suab "creaking" tshwm sim los ntawm kev sib txhuam ceramic thaum ua haujlwm.

② Hlau taub hau + polyethylene khob: daim ntawv thov keeb kwm ntev dua thiab yog kev sib xyaw ua ke ntau dua. Hlau rau ultra-high polymer polyethylene, feem ntau tsis tshwm sim hauv cov haujlwm muaj qhov txawv txav, thiab yuav tsis tawg thiab lwm yam. Txawm li cas los xij, piv nrog ceramic rau ceramic kev sib txhuam interface, nws hnav kuj me ntsis ntxiv nyob rau hauv tib lub load rau tib lub sijhawm. Thiab nyob rau hauv ib tug tsawg tus neeg mob rhiab heev, nws yuav hnov ​​​​mob rau cov khib nyiab pov tseg, ua rau o nyob ib ncig ntawm cov khoom khib nyiab tshwm sim, thiab maj mam mob nyob ib ncig ntawm lub prosthesis, prosthesis loosening, thiab lwm yam. ③ Hlau taub hau + hlau bushing: hlau rau hlau txhuam kev sib tshuam (cobalt-chromium alloy, qee zaum stainless hlau) Qhov kev sib txhuam no tau siv rau hauv 1.90s. Txawm li cas los xij, qhov kev sib txuas no tuaj yeem tsim cov khoom siv hlau ntau, cov khoom no tuaj yeem ua phagocytosed los ntawm macrophages, ua rau lub cev txawv teb chaws, hnav cov hlau ions kuj tuaj yeem nkag mus rau hauv cov hlab ntsha, ua rau muaj kev tsis haum tshuaj hauv lub cev. Nyob rau hauv xyoo tas los no, hom kev sib txuas sib txuas tau raug txiav tawm. ④ Ceramic taub hau rau polyethylene: Ceramic taub hau yog ib qho nyuaj tshaj li hlau thiab yog cov khoom khawb-resistant tshaj plaws cog. Cov ceramic tam sim no siv nyob rau hauv kev sib koom tes hloov kev phais muaj ib qho nyuaj, khawb-resistant, ultra-smooth nto uas tuaj yeem txo qhov hnav tus nqi ntawm polyethylene kev sib txhuam interfaces. Lub peev xwm hnav tus nqi ntawm qhov cog no tsawg dua cov hlau rau polyethylene, hauv lwm lo lus, ceramic rau polyethylene yog qhov kev xav ntau dua hnav resistant dua hlau rau polyethylene! Yog li ntawd, qhov zoo tshaj plaws dag hip sib koom tes, tsuas yog nyob rau hauv cov nqe lus ntawm cov khoom, yog ib tug ceramic-rau-ceramic interface sib koom ua ke. Yog vim li cas rau lub neej ua haujlwm ntev ntawm qhov sib koom ua ke no yog tias qhov hnav tus nqi raug txo los ntawm kaum mus rau ntau pua lub sijhawm piv rau cov pob qij txha yav dhau los, zoo heev rau lub sijhawm siv sib koom ua ke, thiab cov khoom hnav yog tib neeg cov zaub mov uas tsis ua rau osteolysis thiab osteoporosis nyob ib ncig ntawm lub prosthesis, uas yog qhov tsim nyog rau cov menyuam yaus uas muaj kev ua haujlwm siab. 2. Precise placement of the hip prosthesis: through the precise placement of the prosthesis when surgery, the acetabulum and femoral stalk The ruaj khov kho ntawm lub prosthesis thiab lub kaum sab xis tsim nyog ua rau cov prosthesis tsis muaj concentrated thiab dislocated, yog li tsis ua rau lub loosening ntawm lub prosthesis.

Kev tiv thaiv ntawm lawv tus kheej lub duav sib koom ua ke: txo qhov hnyav, kev ua haujlwm hnyav (xws li nce toj thiab lub sijhawm ntev hnyav, thiab lwm yam) kom txo tau qhov hnav thiab tsim kua muag ntawm cov pob qij txha. Tsis tas li ntawd, tiv thaiv kev raug mob, vim kev raug mob tuaj yeem ua rau pob txha nyob ib ncig ntawm lub duav prosthesis, uas tuaj yeem ua rau xoob ntawm cov pob qij txha.

Yog li ntawd, hip prostheses ua los ntawm cov ntaub ntawv tsis tshua muaj abrasive, kev tso chaw ntawm covhip sibthiab qhov tsim nyog kev tiv thaiv ntawm lub duav sib koom ua ke tuaj yeem ua rau cov pob qij txha ntev, txawm tias lub neej.