Kalmar “kashin diddige” na nufin kashin da ke bayan kafa wanda ke yin diddige. Ana kuma san shi da calcaneus kuma yana ɗaya daga cikin manyan ƙasusuwan ƙafa. Kashin diddige yana taimakawa wajen tallafawa nauyin jiki kuma muhimmin bangare ne na tsari da aikin kafa.
