noun
joint-locking technique
Used in martial arts contexts, especially judo, for techniques that manipulate an opponent's joints to control or submit them.
柔道では関節技は肘関節にしかかけられない。
In judo, joint-locking techniques can only be applied to the elbow joint.
固め技 are holding or pinning techniques, distinct from the joint manipulation of 関節技.
Compound of 関節 (joint) and 技 (technique).