I-Makeup ye-Leg Leg
Umlenze ongezantsi uhlala phakathi kwedolo kunye neenyawo. Kukho izihlunu ezininzi ezisemlenzeni ongezantsi, kodwa zintathu ziyaziwa ngokugqithiseleyo: i- gastrocnemius kunye ne- soleus , ezona zihlunu ezinamandla kunomlenze osezantsi, kunye ne -tibialis yangaphambili . Ithenda ye-Achilles nayo ikhona kumlenze ophantsi.
Ulwakhiwo lweThambo loMthetho ophantsi
Umlenze ongezantsi unamalungu amabini anamandla, amathambo amade: i-tibia kunye ne-fibula.
I- tibia , eyaziwa nangokuthi ithambo le-shin, inamandla kwaye inkulu kwala mabini. Itholakala ngasentla phakathi komlenze ophantsi. I- fibula , okanye ithole lesifuba, lincinci kwaye lisekho ngaphandle komlenze ophantsi. Umlenze ongezantsi uphinde ube nemizi yentsholongwane, kuquka ne-nerve fibular, i-nerve fibular, kunye ne-tibial nererve. Isisiseko esisisiseko kule nxalenye yomzimba yi- gastrocnemius , enika ithole isignesha yayo, ukubonakala kwemisipha.
I-tibial yangaphakathi, i-posterior tibial ne-fibular arteries ibangela ukunikezelwa kwegazi kumlenze ongezantsi. Umlenze ongezantsi wenza inxalenye enkulu yomzimba womntu wonke. Isakhiwo esibalulekileyo kunoma yimuphi umsebenzi obunzima, njengokuhamba, ukuma, ukuqhuba okanye ukuxhuma. Iimeko eziqhelekileyo ezichaphazela umlenze ongezantsi ziquka ukuhlukunyezwa kwengxaki, isifo segumbi, iindwangu zengqungquthela kunye neenyembezi zomsizi.
Imisipha yomthetho ophantsi
Umlenze ongezantsi uhlulwe ngamacandelo amane aqulethe iintlobo ezahlukeneyo zomlenze ongezantsi: umva, umxube, umva emva nangaphezulu.
- Igumbi langaphambili , phambi kwe-shin, liphethe i-tibialis yangaphambili, i-extensor digitorum longus, i-hallucis longus kunye ne-peroneus tertius muscle. Ezi zihlunu zidonsa iinzwane kunye neenyawo phezulu, inkqubo eyaziwa ngokuba yi- dorsiflexion . I-tibialis yangaphakathi nayo inceda ekuphenduleni unyawo ngaphakathi. Unokuziva le mvumelwano yesisu ngokubeka isandla sakho ngaphandle kwe-tibia uze ukhupha unyawo lwakho.
- Igumbi elisezantsi lisekho ngaphandle komlenze ongezantsi. Iqukethe i-peroneus longus kunye ne-peroneus brevis muscles. Ezi zihlunu zitsala iinzwane kunye neenyawo ngaphandle. Baye bancedise ngokubonisa inyawo, okanye ukutsalwa kwendawo . Ukuvakalelwa kwesi sivumelwano, ubeke isandla sakho ngaphandle kwe-shin uze uphendule unyawo lwakho.
- Igumbi elingasemva ligcina izihlunu ezinkulu esaziyo njengezilwanyana zamathole: i-gastrocnemius kunye ne-soleus. Eli gumbi liqulethe i-plantaris muscle. I- gastrocnemius iyancipha, ikhudlwana kwaye inezikhonkwane ezimbini zangaphakathi nangaphandle. Yona ibonakala kakhulu kwiimisipha zamathole. Ukholo lwangaphakathi ngaphantsi. Ezi zihlunu ezintathu zidibanisa kwi-tendon ye-Achilles, kwaye bonke bayasiza ngokutya.
- Ikamelo elingaphandle lendawo ephantsi lihlala ngaphakathi ngaphakathi emlenzeni osezantsi. Iquka i-tibialis posterior, i-flexor digitorum longus kunye ne-flexor hallucus longus. I-tibialis posterior idonsa inyawo ngaphakathi, i-flexor digitorum longus ikhupha iintoki kunye ne-flexcus hallucus longus i-flexes enkulu inzwane. Zonke zintathu zoncedo kwi-plantarflexion.
Buyela kuLuhlu lokuLawulwa komthetho
Imithombo:
Iziko lezeMpilo kwiYunivesithi yaseConnecticut Ukulimala Kwemigangatho Nemigangatho. (nd). Ukubuyiselwa ngo-Apreli 03, 2016, ukusuka http://uconnsportsmed.uchc.edu/injury/lowerleg/