information:classification
Katame-waza (grappling techniques)

Katame-waza is further categorised into osaekomi-waza (抑込技, holding techniques), in which tori traps and pins uke on their back on the floor; shime-waza (絞技, strangulation techniques), in which tori attempts to force a submission by choking or strangling uke; and kansetsu-waza (関節技, joint techniques), in which tori attempts to submit uke by painful manipulation of their joints.

A related concept is that of ne-waza (寝技, prone techniques), in which waza are applied from a non-standing position.

In competitive judo, Kansetsu-waza is currently limited to elbow joint manipulation. Manipulation and locking of other joints can be found in various kata, such as Katame-no-kata and Kodokan goshin jutsu.