1. Raws li seb lub posterior cruciate ligament yog khaws cia
Raws li seb lub pob txha nraub qaum yog khaws cia, thawj lub hauv caug hloov kho lub hauv caug tuaj yeem muab faib ua kev hloov pauv tom qab cruciate ligament (Posterior Stabilized, PS) thiab tom qab cruciate ligament tuav (Cruiate Retention, CR).Nyob rau hauv xyoo tas los no, tibial toj siab ntawm ob hom prostheses tau tsim nrog ntau qib sib txawv thiab dav ntawm lub hauv paus kem raws li kev ruaj ntseg ntawm kev sib koom tes, kev ua haujlwm ntawm ligament thiab lub tswv yim ntawm tus kws phais, yog li ntawd. txhim kho kev ruaj ntseg ntawm kev sib koom ua ke thiab txhim kho kev ua haujlwm kinematic.
(1) Nta ntawm CR thiab PS prostheses:
Lub CR prosthesis khaws cia lub posterior cruciate ligament ntawm lubhauv caug sib koomthiab txo tus naj npawb ntawm cov kauj ruam phais;nws zam ntxiv resection ntawm femoral condyle thiab khaws cia cov pob txha loj;theoretically, nws muaj peev xwm ua kom flexion stability, txo paradoxical anterior hloov chaw, thiab ua tau rov qab dov.Pab khaws cia proprioception.
PS prosthesis siv lub cam-kem qauv los hloov qhov kev ua haujlwm ntawm tus ntoo khaub lig posterior hauv kev tsim, kom cov femoral prosthesis tuaj yeem dov rov qab thaum lub sijhawm ua haujlwm flexion.Thaum lub sijhawm ua haujlwm, lubfemoral intercondylaryuav tsum tau osteotomy.Vim qhov kev tshem tawm ntawm lub ligament tom qab lub cev, qhov sib txawv ntawm qhov sib txawv yog qhov loj dua, qhov kev ua haujlwm tom qab yog yooj yim, thiab ligament tshuav nyiaj ligament yog yooj yim dua thiab yooj yim dua.
(2) Cov txheeb ze qhia txog CR thiab PS prostheses:
Feem ntau cov neeg mob uas tau txais thawj tag nrho lub hauv caug arthroplasty tuaj yeem siv CR prosthesis lossis PS prosthesis, thiab kev xaiv ntawm prosthesis feem ntau yog nyob ntawm tus neeg mob tus mob thiab tus kws kho mob qhov kev paub.Txawm li cas los xij, CR prosthesis yog qhov tsim nyog rau cov neeg mob uas ib txwm ua haujlwm tom qab cruciate ligament, me me sib koom ua ke hyperplasia, thiab tsis tshua muaj kev sib koom ua ke.PS prostheses tuaj yeem siv dav hauv feem ntau cov kev hloov hauv lub hauv caug, suav nrog cov neeg mob hnyav hyperplasia thiab deformity.Hauv cov neeg mob uas muaj pob txha loj lossis pob txha tsis xws luag, yuav tsum tau siv cov pas nrig intramedullary lengthening, thiab cov khoom siv ligament yuav tsum tau ua.Siv cov khoom txwv tsis pub siv.
2. Tsau platform thiab txav platform prosthesis
Cov khoom cuavhauv caug sib koom tes prosthesistuaj yeem muab faib ua lub platform ruaj khov thiab txav tau yooj yim raws li txoj kev sib txuas ntawm polyethylene gasket thiab hlau tibial tais.Tsau platform prosthesis yog polyethylene tivthaiv tsau rau tibial toj siab los ntawm kev xauv lub tshuab.Cov khoom siv polyethylene ntawm lub platform txav tau txav mus los ntawm tibial toj siab.Ntxiv nrog rau kev tsim ib qho kev sib koom ua ke nrog femoral prosthesis, polyethylene spacer kuj tso cai rau qee qhov kev txav ntawm tibial toj siab thiab tibial toj siab.
Lub taag platform prosthesis gasket yog xauv rau ntawm cov hlau bracket, uas yog ruaj thiab txhim khu kev qha, thiab yog siv dav.Cov geometries ntawm fixation spacers yuav txawv los ntawm cov chaw tsim tshuaj paus rau cov chaw tsim tshuaj paus kom phim lawv cov femoral prosthesis tshwj xeeb thiab txhim kho qhov xav tau kinematics.Nws tseem tuaj yeem hloov tau yooj yim mus rau qhov txwv shim yog tias xav tau.
Post lub sij hawm: Sep-10-2022
