noun
ligament
Anatomical term for the fibrous tissue connecting bones.
スポーツで膝の靭帯を痛めた。
I injured a ligament in my knee playing sports.
腱 is a tendon (connects muscle to bone), while 靭帯 is a ligament (connects bone to bone).
From 靭 (じん, 'tough, pliable') + 帯 (たい, 'band'), referring to a tough fibrous band in the body.