Heel Hook BJJ: Inside, Outside & When to Use Them

Understanding Heel Hook Mechanics

A heel hook is a rotational leg lock that creates torsional stress on the knee joint. The attacker controls the heel and rotates the lower leg, which creates torque at the knee — specifically stressing the ACL, MCL, LCL, and meniscus depending on the rotation direction.

Unlike the ankle lock (which applies force linearly to the Achilles), the heel hook creates rotation through the entire knee joint. This is why heel hooks are dangerous — the damage happens quickly and often before pain registers. Practitioners must learn to tap immediately when the position is established, not when they feel pain.

Critical rule: Tap to position, not to pain. By the time you feel a heel hook, damage may already be occurring.

Inside Heel Hook

The inside heel hook rotates the foot inward (toward the body's center), stressing the lateral structures of the knee — primarily the LCL and posterolateral corner. It's set up from inside positions: ashi garami (single leg X) and 50/50.

Inside Heel Hook from Ashi Garami

• Establish ashi garami: inside leg hooks their hip, outside leg hooks their far hip
• Trap the heel in your armpit (not in your hand — use your whole arm)
• Clamp your arm tight — close your elbow to your rib cage
• Rotate your body toward the heel, turning the foot inward
• Maintain pressure — don't yank; rotate steadily

The inside heel hook is considered less dangerous than the outside heel hook but still requires respect and controlled training methodology.

Outside Heel Hook

The outside heel hook rotates the foot outward, stressing the medial structures of the knee — primarily the ACL and MCL. It's considered the more dangerous heel hook because these structures are both more vulnerable and more commonly injured in sports.

The outside heel hook is set up from outside positions: outside ashi garami, 50/50, and the crab ride. Gordon Ryan, Craig Jones, and the Danaher Death Squad brought this technique to mainstream prominence in the late 2010s.

Outside Heel Hook Setup

• Establish outside ashi: your outside foot hooks over their hip, inside foot hooks below their knee
• Heel goes in the armpit — wrap the arm around the Achilles (not the ankle)
• Rotate your torso away from them while pulling the heel in
• The rotation direction is opposite to the inside heel hook

Positional Contexts: Where Heel Hooks Live

Ashi Garami (Single Leg X)

Ashi garami is the primary platform for heel hooks. Your legs create a figure-four around their leg — inside leg across their hip, outside leg over their far hip. This position controls their entire leg and creates both inside and outside heel hook options.

50/50

50/50 creates mutual heel hook threats. Both practitioners can attack simultaneously — whoever moves first often finishes first. This creates strategic battles where the person with better positional understanding wins, not necessarily the first to commit.

Saddle (4/11 Position)

The saddle (4/11, inside sankaku, or honeyhole) is considered the most dominant leg entanglement. It creates inside heel hook access with maximum control. John Danaher identified this as the single highest-percentage leg lock position.

Heel Hook Defenses and Leg Lock Defense Concepts

Heel hook defense begins before the submission — it's positional defense:

• Never cross your feet in their guard: Crossed feet create leg lock entries
• Don't ignore ashi garami: If they establish the position, escape or counter immediately
• Heel hook counter (back step): When they reach for the heel, back step to remove the leg from their control
• Knee alignment: Keep your knee pointing away from their body — a rotated knee is easier to heel hook
• Engage or disengage: Either get into leg lock battles with knowledge or disengage — trying to pass through leg lock territory without understanding it leads to injury

Heel Hook Rules and Competition Context

Heel hook rules vary significantly by competition format:

• IBJJF Gi: Heel hooks are illegal at all belt levels
• IBJJF No-Gi: Inside heel hook is legal at brown and black belt; outside heel hook remains illegal
• ADCC: All heel hooks legal
• EBI/Submission Underground: All heel hooks legal
• Polaris/Grapplefest: All heel hooks legal

If you train for IBJJF competition, you need to understand heel hooks for defense even if you won't be attacking with them. At brown/black belt no-gi, inside heel hooks are coming your way.

Training Heel Hooks Safely

Heel hooks require a specific training culture to practice safely:

• Tap to position, not to pain — train yourself to recognize when the position is locked
• Practice positional drilling before adding finishing pressure
• Use slow, controlled pressure when finishing in training
• Establish clear communication with training partners — indicate when to release
• Learn the Danaher leg lock system or equivalent structured approach before free-rolling with heel hooks