Alias · Triangle system
Head and arm triangle (leg variant)
Also known as Arm-In Triangle — the canonical term used on this site.
Training background: structural parallel with the head-arm choke family
Leg-triangle form of the head-and-arm choke
Head and arm triangle (leg variant) is a descriptive name for the arm-in triangle — framing it as the leg-applied version of the head-and-arm choke.
Etymology. “Head and arm” names the head-plus-one-arm capture shared with the arm (kata gatame) version; “(leg variant)” marks that the legs, not an arm, form the triangle. The label links the leg triangle to its arm-applied cousin.
Mechanics. The strangle compresses both sides of the neck at once: the legs close one carotid while the opponent’s trapped arm and shoulder load the other, the same two-sided compression a head-and-arm choke needs. The legs simply replace the arm as the closing structure, squeezing both sides simultaneously.
Cross-reference. “Arm-in triangle choke” is a sibling alias. Full mechanical coverage on Arm-In Triangle.