Understanding Heel Hooks

Arguably the most damaging submission hold across all grappling styles, the heel hook works by isolating your opponent’s femur and rotating the tibia beyond its normal range of motion. In addition to attacking the ligaments in the knee, certain variations of the heel hook also attack the ligaments in the ankle. Biomechanics of the heel …

Understanding Shoulder Locks

The shoulder, or glenohumeral joint, is the most mobile joint in the human body which may explain why it is an ideal joint to attack for offensive joint locks. There are a variety of submissions that attack the vulnerable joint: kimura, americana and omoplata. It is crucial to understand the kinesiology of the shoulder joint …

Kneebars Explained

A kneebar works primarily by causing hyperextension of the knee (tibiofemoral joint). The average person will have around 5-10 degrees of extension and any more motion will challenge the soft tissue and ligamentous structures. Secondary mechanism of injury from a kneebar is posterior translation of the tibia on the femur. Structures that limit hyperextension: Ligaments: …

Physiology of Scarf Hold Chest Compression

If jiu jitsu is the ‘gentle art,’ catch wrestling is considered by many to be the ‘violent art.’ The scarf hold chest compression submission captures the essence of catch wrestling. This submission gained fame when Josh Barnett used it in Metamoris to submit Dean Lister, a grappler who at that time had not been submitted …