A [b]joint lock[/b] is a grappling technique involving manipulation of an opponent's joints in such a way that the joints reach their maximal degree of motion and hyperextension. These are common techniques in [[martial arts]] such as [[judo]], Brazilian jiu-jitsu and sambo among others.

In [[judo]] these are referred to as, 関節技 kansetsu-waza, "joint locking technique", and in Chinese martial arts as 擒拿 (chin na or qinna), which literally means "catching and locking". In Korea these are referred to as 관절기(gwan-jerl-gi, joint skill) or 관절꺾기(gwan-jerl-kerk-gi, joint breaking).

h4. Types of joint locks
* [[armbar]]
* [[kimura lock]]
* [[omoplata]]

h4. External links
* "Joint lock on Wikipedia":[https://en.wikipedia.org/wiki/Joint_lock]
関節技 kansetsu-waza 관절기 관절꺾기 擒拿