Glossary /// Alias
Self-choke triangle defence
Also known as Triangle Choke Escape — the canonical term used on this site.
Colloquial — the defender’s own shoulder closes the strangle
Self-choke triangle defence is the colloquial name for trapped triangle defence, describing the unpleasant fact that the defender’s own pinned shoulder supplies part of the strangling pressure.
Etymology. “Self-choke” is informal and accurate: with the arm pinned across the throat, the shoulder becomes one of the two compressing surfaces. The label sticks because the sensation is distinctive — the pressure feels internal rather than applied.
Mechanics. The pinned shoulder is why extraction fails and why pulling makes it worse; every pull drives the defender’s own arm further into their neck. Rolling changes the angle the shoulder sits at, which is the only thing that relieves it.
Cross-reference. “Pinned-arm triangle escape” is the descriptive name. Full escape coverage on Trapped Triangle Escape.