Within the kata of Goju Ryu there are a number of kansetsu waza (joint locking techniques). I was speaking with my Sensei a few days ago and he mentioned something which I think is important in relation to these techniques.
The kansetsu waza of Goju Ryu are not designed to be submission techniques, such as can be seen in the UFC. The techniques such as arm bars, knee bars, wrist locks, elbow / shoulder lock etc are designed to be applied quickly and powerfully in order to break or seriously damage the joint which is being attacked. Obviously this would only apply to a serious threat to your safety in a self defence situation.
In self defence, it is pointless using these techniques as pain compliance. There will be nobody there to stop the fight when your opponent taps, and upon releasing the hold, you will undoubtably be faced with further attacks from your opponent.
In addition to this, there is the danger of multiple opponents.
When facing multiple opponents it is important to inflict the most amount of damage to your opponent, as fast as possible to then move onto the next opponent. Kansetsu waza when used effectively, seriously affect the opponents ability to continue his attack.
However, there is a Ju side to every Go technique, and there are situations where it may be appropriate to use these techniques as pain compliance. Kinjo Seikichi Sensei once told me how he used the arm bar from Seipai kata to detain a male who had tried to rob him. Kinjo Sensei applied the arm bar and proceeded to drag the robber to the nearest police station!
For people such as police officers, the kansetsu waza can also be an effective tool in arresting people.


