Ankle Lock
From FightWiki
The ankle lock technique was used by many of the traditional Jui-jutsu schools in medieval Japan, North American Catch Wrestling as well as in pre-World War 2 Judo. It became highly unpopular. Judo banned the ankle lock. Catch Wrestling became less popular. Brazilian Jiu-jitsu never officially banned ankle locks altogether, but using them was considered to be crass and lowly. Up to not so long ago, if you were to apply a footlock at a Jiu-jitsu tournament there was a high probability that you would have been boo-ed by the onlookers. The ankle lock is basically a joint lock that hyperextends the ankle joint. The term joint lock refers to bringing the joint to its max range of motion at which point it would be “locked”. Movement beyond this point will hyperextend the joint and cause extreme pain and/or injury. That extreme pain will usually cause the person to submit. If a person does not submit when one of these locks is applied, they may suffer torn ligaments, tendons or muscles. In some cases these locks can cause broken bones and dislocations. The ankle lock is sometimes called the shin lock.Hatyperextending the talocrural joint through plantar hyperflexion. Ankle locks are often applied in a way that causes a compression lock to the achilles tendon.
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