Arms. They make great weapons for fighting. You have fingertips for gouging, the edge of the hand on the little finger side for striking, knuckles for punching or back fist strikes. The heel of the hand is an excellent weapon. A cupped hand is also an effective weapon. The wrist on the outer side is good for striking or blocking. The ridge hand, on the thumb side, is one of the most efficient tools for transferring energy. Then there is the elbow, a devastating weapon capable of both forward and rear ward strikes as well as up and down strikes.
The arm also is a great target. It has several excellent points that are very effective targets. Let’s start with the back of the hand. Triple Warmer 3 is used extensively in joint techniques such as Single Hand Hold and Single Hand Throw. bestitpoint It is used in conjunction with Heart 6 and Lung 8 to rotate the wrist away from the midline. This is a common technique in jujutsu, aikido, hapkido, hwa rang do and can probably be found in many different Indonesian arts. It is used in Escrima in conjunction with stick and knife techniques. TW 3 can also be struck while doing the single-hand hold to effectively dislocate several of the eight little bones in the wrist and possibly cause a spiral fracture. It can be pressed while you are stepping to provide the leverage and pain to effectively throw an opponent. TW 3 can also be used in a Reverse Wrist Lock, Arm Pit Wrist Lock, Hand Mirror and several other joint manipulation techniques.
The wrist contains several points that are useful. Already mentioned are Heart 6 and Lung 8. By squeezing these points you can twist an opponent’s wrist and hand when he has grabbed your lapel, allowing you to do a reverse wristlock. By using these two points in concert you can reduce the strength of an opponent’s arm as done in Single Lapel Escape. You want to make sure you are not grabbing further up the wrist because that splints the wrist and reduces the pain.
Moving up the arm to the center of the wrist approximately one hand width from the crease in the wrist is Pericardium 6. It is located between the Ulna and Radial bones. I have heard of people being knocked unconscious from a strike there but I have not seen it done. However by either pressing or striking P 6 you can reduce the overall strength of the arm allowing for joint manipulations. It is also found in the second movement of Kanku.
Elemental Theory contains five elements: Fire, Water, Metal, Wood and Earth. The radius side of the arm has the elemental value of metal. The Ulna side of the arm is fire. According to the elemental theory’s cycle of destruction fire melts metal. I don’t really know how this works but I do know that it does work. Grasp a partner’s wrist squeezing H 6 and L 8. With your other hand do a hammer strike on Lung 5 located on the top inside of the forearm just below the elbow. Strike inward and toward the hand. You will get a reaction known as a cross body reflex. His chin will jut forward and his opposite hand will fling to his rear.