Alias · Leg Locks
Hip slicer
Also known as Z-Lock — the canonical term used on this site.
Training background: Alternative informal name used in some instructional contexts.
Informal — loose 'slicer' label for the Z-lock
Hip slicer is a colloquial name for the Z-lock — borrowing the “slicer” label loosely to describe the rotational pressure the position puts on the hip.
Etymology. “Slicer” usually denotes a compression lock built on a fulcrum, as in the calf slicer or bicep slicer; here it is applied imprecisely to the Z-lock’s hip attack. The result is a memorable but mechanically inaccurate label — the Z-lock rotates rather than compresses.
Mechanics. The configuration rotates the femur about a fixed point so leverage builds against the hip joint; the rotational axis, not any slicing compression, is what loads the joint toward its limit.
Cross-reference. “Hip lock” is the more accurate descriptive sibling. Full mechanical coverage on Z-Lock.