Sankaku-garami escape

Sankaku-garami escape is the judo-derived name for the defence against the omoplata — the shoulder-lock submission applied from the guard position using the attacker’s leg looped over the opponent’s trapped arm.

Etymology. Sankaku (三角) means “triangle,” referring to the triangular shape formed by the attacker’s leg and the opponent’s trapped arm; garami (緘) means “entanglement” or “wrap.” The combined term — triangle-entanglement — describes the position geometry rather than the submission mechanism. The Brazilian name omoplata (Portuguese for “shoulder blade”) is the term that predominates in BJJ and English-speaking no-gi, but the Japanese designation remains in legacy judo literature where the configuration overlaps with sankaku-jime (triangle choke) ground positions.

Mechanics. The escape’s priority is undoing the leg-and-arm triangle that loads the shoulder. The defending player must either posture forward to flatten the attacker’s hip and disrupt the rotational load on the shoulder, or rotate their body across the trapped arm to neutralise the lever — both require breaking the inside-space connection that the entanglement depends on before the shoulder reaches structural failure.

Cross-reference. English-speaking no-gi and BJJ use “omoplata escape” or “shoulder lock escape from guard.” Full mechanical coverage on Omoplata Escape.