Alias · Kimura system
Reverse kimura
Also known as Hammerlock — the canonical term used on this site.
Training background: Sometimes used informally — refers to the behind-the-back direction compared to the kimura; not a universally accepted term
Colloquial — reverse-direction kimura (hammerlock)
Reverse kimura is the colloquial name for the hammerlock — using the “reverse kimura” label that frames the technique as a directional inversion of the kimura’s shoulder-rotation mechanic.
Etymology. The “reverse” descriptor flags the directional inversion: the kimura rotates the shoulder one direction; the hammerlock rotates it the opposite direction. The label is informal and predominates in gym vocabulary where students learning the hammerlock describe it relative to the more familiar kimura.
Mechanics. The configuration loads the shoulder against its natural range of internal rotation — the inverse of the kimura’s external-rotation loading.
Cross-reference. “Hammerlock” is the canonical name. Full mechanical coverage on Hammerlock.