Glossary /// Alias
Three-quarter juji gatame defence
Also known as 3/4 Armbar Escape — the canonical term used on this site.
Japanese — 十字固 cross-lock, three-quarter variant
Three-quarter juji gatame defence applies the Japanese armbar vocabulary to the partial-extension variant, where juji gatame control is established without the full straightening the classical technique requires.
Etymology. Juji gatame (十字固) is “cross lock”, naming the perpendicular bodies of the classical armbar. “Three-quarter” is the English qualifier for the shortened version — the ride is established but the arm never fully extends, so the finish comes from rotation rather than from hyperextension.
Mechanics. Because the lock does not need extension, the defender cannot buy safety by keeping the arm short. The elbow stays connected to the torso, the hands clasp to bring the opposite arm’s strength into the trapped limb, and if the ride seats the answer is the hitchhiker rotation — turning the thumb so the joint travels with the force rather than against the fulcrum.
Cross-reference. “Bent-arm armbar escape” is the descriptive name. Full escape coverage on 3/4 Armbar Escape.