There are many instances during a match where my or my opponents elbows are locked in a semi-contracted state where it is unable to be straightened out. This causes for easy manipulation of the arm to dq. Although the arm is still mobile, the elbow is "joint-locked" in place. I don't have any replays as of yet but I can get some soon to show.

I can see joint lock happening in specifically the hips, knees, and elbows. Less on the leg region because more times than not, you will need a leg grab in order to joint lock and unless you have a perfect leg grab, legs are stronger than arms and therefore a person being leg grabbed can manipulate your whole body through your arm because it is stronger and causes you to be at a disadvantage although most leg grabs are advantageous.