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 …

Inversion for Jiu Jitsu: How to invert safely

The concept of inverting is often used in sport jiu jitsu as a way to preserve guard, sweep and/or attack an opponent’s leg. While it is a useful movement for competitors is it safe? The safety of the technique is based on two principles: The proper technical skill and having adequate mobility to perform without …