This page provides details on the martial arts technique known as the Back Hand Strike. This open hand technique is in essence a reverse slap. A martial artist hits the target with the back of an open hand (with hand and fingers straight out and not closed in fist). In Karate, the back hand strike is known as Haishu Uchi. This strike should not be confused with the back fist strike (a technique where the hand is closed in a fist). For information on other punches & striking techniques, please visit Black Belt Wiki’s main Punches & Strikes section.
Back hand strikes (and slaps) are often used when the striker doesn’t want to severely injure an opponent. Rather, they are used to “warn” an opponent. However, a powerful back hand strike can do damage to an attacker. For example, if someone is trapped in a rear bear hug, a back hand strike can temporarily incapacitate an opponent if used against the attacker’s groin. However, in self-defense situations, a back fist strike (closed fist) is more likely to cause damage than a back hand strike (open hand).
Martial arts punches & strikes and all other martial arts techniques should only be practiced under the supervision of a trained martial arts instructor.