A mafi yawancin lokuta, cruralgia yana faruwa ne saboda matsawa na jijiyar crural ta hanyar diski na herniated. Hernia wani tsari ne da ke fitowa daga diski na intervertebral, wanda, yana fitowa daga sararin samaniya, yana matsa lamba akan daya daga cikin tushen jijiya na crural.

An kafa kashin baya ta hanyar tarin kashin baya da aka raba da juna ta hanyar abin da ake kira diski intervertebral, tsari mai kama da na guringuntsi da ligament. Wannan faifan yawanci yana aiki azaman mai ɗaukar girgiza da mai rarraba ƙarfi. Wannan faifan, wanda ke da zobe tare da cibiya a cibiyarsa, yana kula da bushewa da tsage tsawon shekaru. Ƙunƙarar faifan diski na iya yin ƙaura zuwa gaɓoɓin kuma ya fito, kuma wannan shi ne diski na herniated. Wannan hernia na iya yin haushi da damfara tushen jijiya, a wannan yanayin tushen lumbar L3 ko L4 don jijiyar crural, kuma yana haifar da ciwo. Hakanan ana iya haɗa wannan matsawa da ciwon osteoarthritis na kashin baya (ƙuƙwalwar aku, ko tsarin kasusuwa yana matsawa tushen jijiya na crural) da / ko ƙunshewar sarari na canal na kashin baya da ke kewaye da kashin baya, wanda ya matsa shi.

Fiye da wuya, ana iya la'akari da wasu abubuwan da ke haifar da matsawa (kamuwa da cuta, hematoma, karaya, ƙari, da dai sauransu).