BJJ Leg Locks: Heel Hooks, Kneebars & More

Why Leg Locks Changed BJJ

For most of BJJ's history, leg locks were treated as low-percentage techniques used by grapplers who didn't know "real" BJJ. That all changed when John Danaher began producing champions — Gordon Ryan, Garry Tonon, Eddie Cummings, Craig Jones — who used systematic leg attacks to submit elite opponents at the highest levels. The Danaher Death Squad proved that a complete leg lock system, built on sound positional mechanics, could dominate even world-class upper body specialists.

Today, no serious no-gi competitor can afford to be ignorant of leg locks, both offensively and defensively.

The Foundational Leg Entanglement Positions

Before learning specific submissions, understand the positions that enable them:

• Outside Ashi Garami (Straight Ashi) — The most accessible position. Your outside leg controls their near leg from the outside. Enables straight ankle lock and kneebar.
• Inside Sankaku (Inside Heel Hook Position) — Your inside leg wraps around their near leg from the inside. The most dangerous position; enables inside heel hook — the most powerful leg lock submission.
• Outside Heel Hook Position — Created via backstep or specific guard transitions. Enables outside heel hook.
• 50/50 Guard — Both athletes have equal entanglement. Creates symmetrical heel hook access. Understanding who "wins" the 50/50 tie-breaking battle is critical.
• Honey Hole (Saddle/Inside Sankaku with Calf Slicer) — A variant of inside heel hook position that's extremely difficult to escape. One of the most secure leg attack positions.

Straight Ankle Lock

The most fundamental leg lock submission. From ashi garami, you secure the achilles tendon in the crook of your elbow, squeeze your elbow to your hip, and arch your back while rotating. The pressure targets the ankle joint and achilles tendon. The straight ankle lock is legal at all belt levels in most rulesets, making it the ideal entry point for leg lock development.

Key detail: the pressure must come from the elbow and hip acting together, not just arm strength. Many practitioners fail to finish straight ankle locks because they're pulling with their arms rather than driving with their hips.

Heel Hook (Outside)

The outside heel hook targets the lateral (outside) structures of the knee. From outside heel hook position, you secure the heel of the opponent's foot in the crook of your arm (bicep pocket), and rotate internally (toward you). The rotation creates torsion on the knee's lateral ligaments. The outside heel hook is considered less dangerous than the inside heel hook but still requires controlled training application.

Heel Hook (Inside)

The inside heel hook targets the medial structures of the knee — ACL, MCL, and meniscus — making it the most dangerous submission in grappling. From inside heel hook position (inside sankaku), you secure the heel and rotate externally (away from you). The danger: knee ligament damage can occur before significant pain is felt, meaning athletes can be injured while still trying to escape. Train inside heel hooks with extreme care, slow finishing pressure, and only with trusted partners.

Gordon Ryan, Craig Jones, and Garry Tonon are all excellent resources for inside heel hook mechanics. John Danaher's "Leg Lock Anthology" covers the finishing mechanics exhaustively.

Kneebar

The kneebar hyperextends the knee joint using the body as a lever. You secure the knee over a fulcrum (your hip or shoulder), control the foot, and apply pressure toward the leg's natural bending limit. Kneebars are legal at higher belt levels in gi competition (brown and black belt in IBJJF) and broadly in no-gi. Craig Jones and Lachlan Giles both use the kneebar as a finishing option from positions where heel hooks are defended.

Toe Hold

The toe hold targets the ankle joint by controlling the foot and applying rotational force. You secure the top of the foot, bring it behind the opponent's calf, and rotate. The toe hold is effective from a variety of positions including top turtle, side control, and leg entanglements. It's particularly useful as a secondary attack when the heel hook is being defended.

Calf Slicer

The calf slicer compresses the calf muscle against a bone edge (your arm or shin), creating intense pain and tapping most opponents before actual damage occurs. It's a useful control technique and legitimate submission that works particularly well from top turtle position. Less used at elite levels but highly effective in recreational and intermediate competition.

Building Safe Leg Lock Training Culture

Leg locks require a different training culture than upper body submissions. Key principles:

• Tap before you feel pain with heel hooks — the damage often precedes the sensation
• Never crank heel hooks — use slow, controlled pressure
• Establish clear training agreements about leg lock intensity before rolling
• Progress from straight ankle locks → toe holds → outside heel hooks → inside heel hooks as experience and trust develop
• Work with coaches who understand leg lock safety before going deep into the system

Use AIBJJ's training journal to note your leg lock training context — which partners you're working advanced techniques with, at what intensity, and what you're developing each session.

Leg Lock Defense

Defense is as important as offense. Key defensive principles: never straighten your leg when caught in ashi garami, learn the heel hook escape window, understand how to "roll" out of straight ashi before the finish is deep, and recognize inside sankaku early enough to defend the entry rather than the finish. Lachlan Giles' guard retention and defensive work contains some of the best leg lock defense instruction available.