Cov qia femoral yog qhov hloov pauv uas haum rau koj cov pob txha ncej puab. Keeb kwm, qhov no yog tsim los ntawm titanium thiab/los yog cob alt-chromium hlau. Nyob rau lub caij nyoog niaj hnub no ntawm kev hloov lub duav, cov pob txha cemented (ntxig nrog cov pob txha phais) yog tsim los ntawm cob alt-chromium hlau.
Puas yog cob alt tseem siv los hloov lub duav?
Cob alt lom los ntawm hip prosthesis yog qhov tsawg tab sis debilitating. Nws tshwm sim thaum cov hlau hnav thiab qhia cob alt rau hauv cov hlab ntsha. Qhov no yog qhov paub txog kev pheej hmoo nrog hlau-ntawm-hlau cog, tab sis cov ntaub ntawv tshiab qhia tau hais tias nws kuj tseem muaj kev pheej hmoo nrog cov hlau-rau-polyethylene implants. Raws li Dr.
Puas yog hloov lub duav ua los ntawm titanium?
Keeb kwm, qhov no yog tsim los ntawm cob alt-chromium thiab / lossis titanium hlau. Nyob rau hauv lub caij ntuj no ntawm kev hloov lub duav, cemented stems (ntxig nrog epoxy pob txha cement) yog tsim los ntawm cob alt-chromium hlau. Cementless stems (cov cog uas koj cov pob txha loj tuaj rau hauv cov hlau) yog ua los ntawm titanium.
Yuav siv cov hlau dab tsi los hloov lub duav?
Tam sim no hip sib koom tes prostheses yog ua los ntawm hlau, ceramics thiab cov ntaub ntawv yas. Feem ntau siv yog titanium alloys, stainless hlau, tshwj xeeb high-strength alloys, alumina, zirconia, zirconia toughened alumina (ZTA), thiab UHMWPE.
Thaum twg siv cob alt hip hloov?
In the 2000s, tuam txhabpib tsim thiab thawb cov hlau-rau-hlau hip hloov, tab sis tsis ntev nws tau los ua pov thawj tias lawv muaj siab dua li qhov ua tsis tau zoo. Tsis tas li ntawd, tib neeg tau yws txog qhov mob ntawm lub duav thiab tau nthuav tawm nrog qib cob alt thiab chromium siab.
