Alias · Leg Locks
Achilles Lock
Also known as Straight Ankle Lock — the canonical term used on this site.
Training background: Structural target name
Anatomical — Achilles-tendon target name
Achilles Lock is the anatomical-precision name for the straight ankle lock — naming the submission by the Achilles tendon as the primary structural target of the compression mechanic.
Etymology. “Achilles” specifies the anatomical target; “Lock” attaches the submission category. The label predominates where the writer wants to specify the structural target rather than the technique’s geometric name.
Mechanics. The dorsiflexion compresses the Achilles tendon and loads the anterior ankle capsule — the hip extension provides the force vector that loads the structures past safe range.
Cross-reference. “Footlock,” “Straight Foot Lock,” and “Straight Ankle Lock” are alternate names. Full mechanical coverage on Straight Ankle Lock.