Isibambano se-sacroiliac , esivame ukubizwa ngokuthi "i-SI joint" yindawo ekhoyo phakathi kwethambo le-sacrum nasemva kwethambo le-hip. Unokucinga ngokubambisana kwe-SI njengendawo apho umgudu uxhamla kwi-pelvis kwinqanaba lakho.
Unamalungu amabili e-SI-elinye kwicala le-sacrum.
Iimpawu ze-SI ezidibeneyo
Njengamalungu amaninzi omzimba , i-sacroiliac iqulethwe ngamathambo amabini, oko kukuthi, i-sacrum kunye ne-ilium.
Ngaphambili, ikwahlulelwa njenge-diarthrodial joint (oko kuthetha ukuba luhlobo oluthile oluhambelanayo oluhlangeneyo) oluquka i-sacrum kunye namathambo amabili e-hip ngasemva. Lezi zimbini zamathambo (i-ilium, njengoko kuchaziwe ngasentla) zibizwa ngokuba yi-innominates ze-pelvis.
Umgca we-SI ohlangeneyo awuhambisani nokuhamba phambili.
I-sacrum iyithambo elinjenge-triangular elisezantsi ngaphantsi kwe- lumbar spine . I-verbbra yokugqibela (kunye nobunzima bekholwana yomgcini wecala lolo hlobo) lihlala phezulu kwiprumrum (leyo yindawo eyaziwa njenge-sacral base).
Ngalinye icala, i-ilium inikeza uhlobo lokuxhaswa kwe-sacrum.
I-sacrum ikhutshwe phakathi kwe-two iaa (okanye i-innominates) ngokusebenza njengombumba. Umphezulu we-sacrum ububanzi ngaphezu kwezantsi, eyenza ukuba i-snug ifane phakathi kwamathambo kulelo nqanaba. Amathambo aqhutyelwa ngokuqhubekayo ngamagxa. Kanye nokuqinisekisa ukulungelelanisa, le mijelo inceda i-sacrum ukuxhasa ubunzima bomgudu nentloko.
Kukho ezininzi iigaments kumqolo we-sacroiliac ngokubambisana kunaphambili. Emuva, iigamente zi:
- I-sacroiliac ligament i-interosse iphakathi kwe-ilium ne-sacrum. Inceda ukugcina i-congruency ehlangeneyo kwaye ikhona apho ininzi yesantya sokutshintsha ukusuka kwintlambo ukuya kwi-hip (kunye nomgca ophantsi) ivela.
- I-postro sacroiliac ligament isithuba sokuqhubeka kwe-interossus sacroiliac ligament. Inika inkxaso kwinkqubo yokungenelela kwimida yangaphambili yamathambo edibeneyo ngokuzisa i-ilium kufuphi ne-sacrum; Ngale ndlela, inceda i-sacrum ukuthatha ubunzima bomgudu ukusuka phezulu.
- I-iliolumbar ligament isekela ukutshintshwa kwesisindo kunye nemisebenzi yokuxhasa ye-interroseus sacroiliac kunye ne-postro sacroiliac ligaments echazwe ngasentla.
- I-ligrotuberous ligament yinto enzima ephuma kwi-sacrum ukuya kumathambo ahleliyo (ischial tuberosities).
- I-ligrospinous ligament elincinci ligament ebuye isuka kwi-sacrum ukuya emathanjeni ahleliyo, kodwa ayifaki ukudibanisa kunye ne-ligrotuberous ligament.
Zombini i-sacrotuberous kunye ne-sacrospinous ligaments iyanciphisa intshukumo yokuhamba kwe-sacrum. I-sacral bhanya ibizwa ngokuba yi-nutation kwaye ichazwe ngezantsi.
Ngaphambili, i-ligament yangaphakathi yinto nje yokwandiswa kwe-capsule ejikeleze i-SI. I-ligament yangaphakathi incinci, ngakumbi xa kuthelekiswa nemigqaliselo engemuva .
Iimpawu ezidibeneyo ze-SI
Kubomntu omdala, umlo wesigxina se-sacroiliac ugobe, kodwa utshintshiswe ngumbonakalo owenzelayo umva kunye nokuxubusha phambili.
Ngaphezulu nje, udibaniso lufakwe njengendlebe okanye ibhontshisi yeentso.
Ukubambisana kwe-SI kunomdla kuba kuhlonywa njengoluhlobo olulodwa lokudibanisa ngaphambili kunye nolunye emva.
Ngaphambili, ngumxube we-synovial (uxoxwe ngentla nje nge-diarthrodial). Olu hlobo lokubambisana luhlala luhamba kakhulu, nangona kungenjalo kwimeko yokuba i-SI. (Ihlombe lakho kunye namagqabha ngamalungu angama-synovial-cinga ngokunyakaza okukhulu abakwenzayo.)
Emuva, idilesi ye-SI ikwahlulelwa njenge-syndesmosis. Oku kuthetha ukuba amathambo amabini (i-sacrum kunye ne-ilium) ibanjwe kunye nemigudu. Sathetha malunga naziphi iigamente ezi zingentla.
Imihlaba ye-sacrum kunye ne-ilium-apho intlanganiso phakathi kwala mabini ivela khona-ihlanganiswe ne-cartilage (i-sacrum idibene nomhlobo ohlukileyo we-cartilage kune-ilium), kunye nenani leembombo ezifana neengqameko nemigodi . (Ezi ziphambili kuphela.)
Umgca womhlaba weethambo ngalinye elibandakanya ukudibanisa i-SI ukudibana; baxoxisana ukuze bafake phambili phambi. I-SI intsebenziswano yongqinisiso igcinwa kuphela yindlela yokungenelela kunye nemigudu.
Ngokuya kwiimisipha, izabelo ze-gluteus maximus kunye nezihlunu ze-piriformis ziwela i-SI.
Yintoni eyenziwa yi-SI ehlangeneyo?
Isibambiso se-SI sinobunzima bomgudu. Inoxanduva lokudlulisa lo bunzima kwindawo ephakathi kwe-hip kunye neenyawo ngokubanzi, eyaziwa ngokuba ngumgca ophantsi. Ikwazisa kwakhona amandla okujikeleza (okujikelezayo) ukusuka kumgca ophantsi oya kuwo wonke umgca.
Umzekelo, ngexesha lokuhamba, njengoko ugqiba ukuthatha isinyathelo phambili, umlenze wakho ongemuva unwetshwe emva kwakho kwaye uphonsa inzwane enkulu. (Oku kubizwa ngokuba yi-"shenxisa" isigaba senzuzo.) Ngeli nqanaba, kukho indawo encinane phakathi kwamathambo amabini e-SI. Oku kubizwa ngokuba yi-congruency ehlangeneyo okanye "ipakethe yokuvala" yesigxina. Isikhundla esiphezulu se-SI sisinceda ukuhambisa amandla avela kwizinzwane ezinkulu njengoko zidlulisela umgca ongaphantsi, uze udlule kwi-sacrum kunye nomgudu.
Idibaniso ye-SI iphinde itshintshe ubunzima bomgudu wakho emathanjeni ahleliyo (ezobuchwepheshe zibizwa ngokuba yi-ischial tuberosities), ngexesha lokuhlala.
Iindibano ze-SI ezidibeneyo.
Njengoko kuchazwe ngasentla, nangona iqela langaphambili le-SI lidibanisa njengombutho we-synovial, inomlinganiselo omncinane wokunyakaza okhoyo kuwo. Oku kuyinto engavamile yokudibanisa i synovial. Esinye sezizathu zokuhamba ngokukhawuleza kukuxhaswa ngokuxhaswa kwamanani kunye nokuxanduva lokudlulisa, okufuna ukuzinza nokuxhuma okufutshane phakathi kwekhram kunye ne-ilium.
Iindibano zendibano ye-sacroiliac ziquka:
- Bobabini amathambo e-hip agxotha phambili xa i-sacrum ihlala ibeka, ebizwa ngokuba yi-anterior innominate.
- Bobabini amathambo e-hip ajikeleza ngasemva ngelixa i-sacrum ihlala, ebizwa ngokuba yi-posterior innominate
- Enye ye-hip bone ihamba phambili, enye ibuyelela emva kwaye i-sacrum iyahlala. Oku kwenzeka xa uhamba kwaye ubizwa ngokuba yi-antagonistic innominate.
- I-sacrum iguquguquka, ebizwa ngokuba yi-nutation.
- I-sacrum iyanda, ibizwa ngokuba yi-counternation.
Kwakhona ukuhamba kwintlanganiso ye-SI incinci; Kwakhona, xa i-sacrum ihamba, amathambo okunyuka angashukunyiswa kunye nayo.
> Imithombo:
> Kapandji, IA, "I-Physiology yeZihlanganisi". Uhlobo lwesihlanu. Churchill Livingstone. INguqulelo yesiNgesi 1987. eNew York.
> Moore, K., Dalley, A. I-Anatomy ye-Clinically Oriented. Isihlanu. Uhlobo. Lippincott, Williams & Wilkins. 2006. Baltimore.
> I-Pool-Goudzwaard A, iHoek van Dijke G, i-Mulder P, i-Spoor C, i-Snijders C, i-Stoeckart R .. i-Iliolumbar ligament: impembelelo yayo ekuzinzekeni kwendibano ye-sacroiliac. Iklinikhi yaseByomech ngoFebruwari 2003 ngoFebruwari.