Koshiwaza

Koshiwaza, or hip techniques, are a category of throwing techniques in Judo and related grappling arts in which the hip serves as the main lever to project an opponent. The thrower positions the hips under the opponent’s center of gravity, establishes kuzushi (balance breaking), and then uses hip rotation and lifting to throw the opponent over or past the body.

In practice, koshiwaza rely on the close attachment of the thrower to the opponent’s center line and a controlled transfer of weight through the hips. Key principles include proper alignment of the spine, a stable stance, and timely rotation of the hips to act as a fulcrum. The entry is often initiated with a grip and a step that places the rear hip under the opponent before executing the throw.

Common examples of koshiwaza include o-goshi (major hip throw), harai-goshi (sweeping hip throw), and tsuri-goshi (lifting hip throw). These techniques vary in grip, direction, and the specific hip action, but they share the core use of the hip as the principal fulcrum and lever to pivot or lift the opponent.

Koshiwaza are taught across disciplines such as Judo and certain forms of traditional Jujutsu and Aikido, with emphasis on safety and controlled execution. When practiced, they help develop hip strength, body alignment, and timing, contributing to a broad repertoire of throwing skills.