I-capsule edibeneyo yendawo yendawo yesikhombisi esisebenzayo esivala kunye nokuvala intsebenziswano (eyaziwa ngokuba yi-zygapophysis okanye i-zygapophyseal joint) ukusuka phezulu ukuya phezulu. Le tissue edibeneyo yenza uhlobo lwesigxobo esinamandla esibamba amathambo amabini enza i- facet ehlangene kunye.
Ngokutsho kwenkcazo ye-anatomiki eyenziwa ngo-Julayi 2011 kwimiqulu ye- Journal of Biomechanical Engineering , i-capet joint-facet iphikisana nemimoya yokuxhatshazwa eyenziwa ngokubambisana xa ijikeleza kunye / okanye iguqulela.
Izintshukumo zokuguqulela zizo ezihamba ngqo kumgca. Ukuhamba ngumzekelo, kodwa xa uthetha ngokuhamba ngokubambisana, intsingiselo iyinto efihlakeleyo. Kule meko, ibhekisela kumgca (okuthi akukho ukujikeleza okanye ukuphazamiseka okubandakanyekayo).
Ngokubambisana nazo zonke izakhiwo ezenza idibeneyo, i-capsule inceda ukudlulisa iintlobo ezahlukeneyo zemithwalo ngexesha leentlobo zokuhamba kwemigudu.
I-vertebra nganye inezibane ezine-facet (ezimbini eziphezulu) (ezibizwa ngokuba zizikhundla eziphezulu) kunye ezimbini kwizantsi (ezibizwa ngokuba ziziphathamandla ezingaphantsi), ngoko ke kukho ezine i-capetules ezihlangeneyo nganye. Izicubu ezixhambileyo ze-capsule zidibanisa ngokupheleleyo. Ngaphakathi lwentsebenziswano yimbane (ebizwa ngokuba yimbane ye synovial) eyenza i-synovial fluid. I-Synovial fluid ifana ne-WD-40 yokudibanisa - iya kubamba amathambo awenza umdibaniso wefowuni, kunye nesithuba phakathi kwabo, esinceda senze uhambo oluhambelanayo, olungenakuqhaqhaza ngokubambisana.
I-capsule ye-facet edibeneyo-kunye nezinye izinto ezidibeneyo-zinikwe ngokugqithiseleyo ngeentsholongwane-ezidlala indima ekuvezeni ubuhlungu. Uphando olupapashwe kwimiba ye-American Journal ye-Neuroradiology ithi enye yeentlungu zentlungu ezenziwe yintlawulelo yenziwe ngoluhlu lwe-capsular. (Ababhali baqamba igama elithi impingement kunye ne-inflammation njengenye i-generators). Bathetha ukuba izixhamli ze-facet zingabangela uxanduva lwama-45% eentlungu ezisezantsi ezibuhlungu kunye neemeko ezingama-55% zentlungu engapheliyo entanyeni ngaphandle kokurhweba.
Imithombo:
I-Bykowski, J., Wong, W., iNdima yamaQumrhu e-facet kwi-Pain Pain kunye noNyango oLawulwa nguMfanekiso: Ukuhlaziywa . AJNR.
Jaumard, N., Welch, W., Winkelstein, B. i-Spinal Facet i-Biomechanics kunye ne-Mechanotransduction kwiimeko eziqhelekileyo, eziNobungozi kunye neziNgcakalisi. J Biomech Eng. Julayi 2011.
Schulte T., Filler T., Struwe P., Liem D., Bullmann V. Iifolda ze-Meniscoid eziTraftical kwi-Thoracic Zygapophysial Joints. Isihlwele. Matshi 15, 2010.