[edit] Figure Four Arm-lock/Americana (Ude-garami)
The figure four arm-lock (also known in the USA as the americana or americano) is a term used in Brazilian Jiu-Jitsu to specify the lateral keylock known in judo as ude-garami (arm entanglement). This lock is generally applied only from the mount or side control. The opponent's arm is pinned to the ground so that it is bent at the elbow, with the opponent's palm upwards. The wrist is grabbed with the opposite hand, and the arm on the same side is put under the opponents arm, gripping the attacker's wrist. This results in the necessary figure-four hold. While keeping the opponent's hand pinned to the ground, the attacker begins sliding his or her pinned arm down and parallel to his or her thigh while cranking the elbow upwards. This is referred to as 'painting'. The opponent will feel pressure on their elbow and/or shoulder. From some positions, such as kesa-gatame, it is possible to apply this technique with a leg instead of using two arms.
The technique is one of the official 29 grappling techniques of Kodokan Judo. It is one of the nine joint techniques of the Kansetsu-waza list, one of the three grappling lists in Judo's Katame-waza[2] enumerating 29 grappling techniques.[3] All of Judo's competition legal joint techniques are arm locks.
[edit] Kimura (Gyaku ude-garami)
The kimura lock (Reverse Ude Garami), applied on H