The arm bar is the most-used joint lock submission in MMA today and it very well may be the most used submission period. This submission is performed by placing your legs across your opponent’s chest, with one of his arms between your thighs and with the elbow joint against your hips. From that position your opponent’s arm is grabbed with your arms and his forearm is placed onto your chest. To lock the arm, you will simply lean back and arch your hips at the same time. This creates intense pressure in the elbow joint and forces the tap. If he does not tap out, he (or she) will risk torn ligaments and tendons in the elbow joint. In some cases, the arm bar may result in a broken bone if there is enough leverage, power and angle.