A synovial joint yog hom kev sib koom ua ke pom nruab nrab ntawm cov pob txha uas txav tawm tsam ib leeg, xws li cov pob qij txha ntawm ceg ceg (xws li lub xub pwg, lub duav, lub luj tshib thiab hauv caug). Tus yam ntxwv nws muaj qhov sib koom ua ke nrog cov kua dej.
6 lub pob qij txha nyob qhov twg?
Lub rau hom pob qij txha yog cov pivot, pob khawm, eeb, dav hlau, condyloid, thiab pob-thiab-socket pob qij txha. Pivot pob qij txha muaj nyob rau hauv koj lub caj dab vertebrae, thaum pob qij txha nyob rau hauv koj lub luj tshib, ntiv tes, thiab hauv caug. Saddle thiab dav hlau pob qij txha muaj nyob hauv koj txhais tes.
Dab tsi yog cov pob qij txha hauv lub cev?
Synovial pob qij txha yog hom kev sib koom ua ke ntau tshaj plaws hauv lub cev (saib duab 1). Cov pob qij txha no yog hu ua diarthroses, txhais tau tias lawv muaj kev ywj pheej. Tus yam ntxwv tseem ceeb ntawm kev sib koom tes synovial uas tsis pom ntawm cov pob qij txha los yog pob txha mos yog qhov muaj cov kab noj hniav sib koom.
qhov sib koom ua ke nyob qhov twg thiab piav qhia nws ua haujlwm?
Structure of Synovial Joints. Lub synovial sib koom los yog diarthrosis tshwm sim ntawm cov pob txha pob txha kom tso cai txav. Nws yog qhov txawv los ntawm ib puag ncig synovial capsule.
Cov piv txwv ntawm cov pob qij txha yog dab tsi?
Piv txwv ntawm tib neeg cov pob qij txha synovial yog:
- Gliding pob qij txha (lossis dav hlau pob qij txha) - piv txwv li. lub carpals ntawm dab teg.
- Hinge joints – e.g. lub luj tshib (nruab nrab ntawm lub humerus thiab lub ulna)
- Pivotsib koom - e.g. atlanto-axial sib koom.
- Condyloid pob qij txha (lossis ellipsoidal pob qij txha) - piv txwv li. radiocarpal sib koom.
