Shuto Sakotsu Uchi is a technique in Kyokushin karate. It translates to 'Knife-Hand Collarbone Strike.' This technique involves delivering a strike with the knife hand to the opponent's collarbone area. The term 'Shuto' refers to the knife hand, 'Sakotsu' indicates the collarbone, and 'Uchi' refers to the strike. It is commonly used to target the collarbone for effective disruption and potential incapacitation.