後こう脛けい骨こつ筋きんじ字FuriganaMeanings1nountibialis posterior muscleanatomy›Anatomical term for the muscle located in the deep posterior compartment of the lower leg.後こう脛けい骨こつ筋きんは足あしの内うち側がわのアーチを支ささえる重じゅう要ような筋きん肉にくです。The tibialis posterior muscle is an important muscle that supports the medial arch of the foot.