2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Diarthrosis pob qij txha yog cov txav tau yooj yim synovial pob qij txha. Synovial pob qij txha tuaj yeem raug faib ua nonaxial, monoaxial, biaxial, thiab multiaxial. Ntau yam kev txav chaw tso cai los ntawm cov pob qij txha synovial yog abduction, adduction, extension, flexion, thiab rotation.
Yuav ua li cas cov pob qij txha muaj peev xwm tig tau?
Kev sib hloov. Kev sib hloov tuaj yeem tshwm sim hauv kab vertebral, ntawm pivot sib koom, lossis ntawm pob-thiab-qhov sib koom ua ke.
Cov pob qij txha twg muaj Monaxial txav nrog kev sib hloov?
Hinge Joint- yog cov pob qij txha monaxial uas tso cai rau lub angular txav hauv ib lub dav hlau xwb. Pivot joints- cov pob qij txha monaxial uas tso cai rau kev sib hloov nkaus xwb. Ellipsoidal pob qij txha - yog cov pob qij txha biaxial nrog lub oval Ellipsoidal pob qij txha yog cov pob qij txha biaxial nrog lub ntsej muag oval articular uas nestles nyob rau hauv kev nyuaj siab nyob rau hauv qhov tawm tsam.
Yuav ua li cas sib koom ua ke tso cai rau kev sib hloov nkaus xwb?
Pivot pob qij txha: Cov pob qij txha no tso cai rau ib hom kev txav, kev sib hloov ntawm ib pob txha ntawm lossis ib ncig ntawm lwm tus. Ib qho piv txwv ntawm kev sib koom ua ke yog qhov sib koom ua ke ntawm atlas thiab axis (C1 & C2) vertebrae, kev sib hloov ntawm ib leeg tso cai rau peb lub taub hau rau 'pivot' sab laug thiab sab xis.
hom kev sib koom twg yog qhov txav tau tshaj plaws?
A synovial sib koom, tseem hu ua diarthrosis, yog hom sib koom ua ke ntau tshaj plaws thiab txav tau yooj yim tshaj plaws ntawm kev sib koom ua ke hauv tus tsiaj lub cev.
Pom zoo:
Dab tsi ua kom pob txha pob txha ntawm cov pob qij txha?
pob txha muab cov duab, txhawb nqa, thiab qauv rau lwm cov ntaub so ntswg hauv lub cev. Nws kuj yuav pab tau cov pob qij txha. Pob txha mos kuj smoothens cov pob txha nto ntawm cov pob qij txha. Cov ntaub so ntswg dab tsi npog cov pob txha ntawm cov pob qij txha?
Puas yog pob txha pob txha pob txha zoo ib yam li meniscus?
Cov pob txha mos yog qhov tawv tab sis du npog ntawm qhov kawg ntawm cov pob txha hauv cov pob qij txha. Nws tso cai rau gliding yam tsis muaj kev tiv thaiv ntau thiab ua haujlwm nrog cov meniscus kom cushion kawg ntawm cov pob txha. Lub meniscus nyob nruab nrab ntawm lub femur thiab tibia.
Dab tsi qhov sib txawv ntawm cov pob txha pob txha thiab pob txha?
Cov pob txha pob txha yog tsim los ntawm osteons thiab tsim cov txheej txheem sab nraud ntawm txhua pob txha. Cov pob txha pob txha yog tsim los ntawm trabeculae thiab ua rau sab hauv ntawm txhua pob txha. Dab tsi yog qhov sib txawv ntawm cov pob txha pob txha thiab pob txha pob txha?
Puas yog lub pob txha pob txha pob txha pob txha?
CONCLUSIONS: vertebral endplate raug mob feem ntau pom hauv osteoporotic vertebral compression fractures. Dab tsi ua rau lub pob txha tawg? Nws yog kev xav tias, nyob rau hauv ntau qhov mob ntawm qhov mob qis qis, thawj qhov ua rau mob yog pob txha ntawm pob txha caj qaum los ntawm compression rog.
Vim li cas pob txha pob txha txawv ntawm cov pob txha li niaj zaus?
Thaum osteoporosis tshwm sim, lub qhov thiab qhov chaw hauv lub honeycomb loj dua li cov pob txha noj qab haus huv. Cov pob txha osteoporotic muaj poob ntom lossis loj thiab muaj cov ntaub so ntswg txawv txav. Raws li cov pob txha tsis tshua muaj zog, lawv tsis muaj zog thiab feem ntau yuav tawg.
