基き節せつ骨こつきせつこつMeanings1nounproximal phalanxanatomyAnatomical term for the bone of a finger or toe closest to the hand or foot.基き節せつ骨こつは指ゆびの付つけ根ねにある骨ほねです。The proximal phalanx is the bone at the base of the finger.