Isshin-Ryu Back Knuckle Strike: 

The back knuckle is the karateka’s version of the boxer’s jab. It is mainly made with the arm and is a speed type technique. It can be used to set-up fa second technique. Use it  like a boxer’s jab.

This strike is delivered using the knuckles of the inverted fist. It is delivered in an arching motion. The angle can be 45˚ from the ear and down to 90˚ over the head and down. It can also be used as a spinning technique.

Stance:

• Seisan Dachi.
• Side Stance:

Note: Seisan-dachi is a forward walking stance and is both a fighting position and a transitional position. The side stance can be also be used to deliver this strike, but the side stance  limits the karateka’s weapons after the blow is delivered.

Execution:

• Lead hand snaps goes forward.
• Lean forward to extend your reach.
• Push forward while you’re on your toes.
• After the punch is extended it is quickly pulled back to cover for a counterattack.

Striking Part of the Hand:

• The striking part of the fist, is the back of the knuckles.

Target Area:

• Bridge of the Nose

Note: Make the adversary’s nose bleed. Give him/her something to think about.