Alias · Triangle system
Shoulder lock from guard
Also known as Omoplata — the canonical term used on this site.
Training background: descriptive English
Descriptive — the omoplata shoulder lock
Shoulder lock from guard is a descriptive name for the omoplata — naming the shoulder lock applied with the legs from guard.
Etymology. “Shoulder lock” names the omoplata’s target; “from guard” locates it in the position it is most often finished from. The label translates the Portuguese “omoplata” into plain function and place.
Mechanics. The omoplata loads the shoulder to its structural limit: the legs figure-four over the arm and the attacker rotates the shoulder forward and down past its range, driving the joint toward failure. The lock finishes when the shoulder is taken to its limit, not by twisting the arm itself.
Cross-reference. “Figure-four with legs” is a sibling alias. Full mechanical coverage on Omoplata.