Leg Lock
White

Inside Heel Hook: A White Belt's Biomechanical Guide

The Inside Heel Hook is a leg lock that targets the opponent's heel, aiming to hyperextend the knee and ankle joints. It's typically attacked from positions where you can isolate one of your opponent's legs, such as the 50-50 guard or when they are on their hands and knees.

White belts often struggle due to a lack of understanding of joint mechanics and a tendency to rely on brute strength. This can lead to ineffective attempts and increased risk of injury to both themselves and their training partners.

The key mechanical insight is controlling the opponent's hip and knee while isolating the ankle to create torque across the knee joint, forcing flexion or extension beyond its natural range of motion.

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Contents

Grips & Mechanics

**Starting Position**: Assume the 50-50 guard, ensuring your opponent's leg is trapped between your legs with your shin across their ankle and your heel near their hip. Your opponent's knee should be bent.
**Grip 1**: Secure your opponent's foot by placing your forearm across the top of their foot, fingers pointing towards their toes. Your other hand grips your own shin or forearm, creating a "figure four" grip around their ankle.
**Hip Control**: Drive your hips towards your opponent's hips, creating a strong base and preventing them from rotating away. Your chest should be tight against their thigh.
**Knee Alignment**: Ensure your opponent's knee is pointing directly upwards, perpendicular to the mat. This is crucial for isolating the knee joint.
**Weight Transfer**: Shift your weight onto your hips, lifting your opponent's leg slightly off the mat. Your upper body should be leaning back slightly.
**Ankle Isolation**: Using your figure-four grip, pull their heel towards your chest while simultaneously pushing their knee away with your hips. This creates tension on the ankle and knee.
**Finishing Pressure**: Apply finishing pressure by extending your hips and straightening your back, creating a rotational force around the ankle. The pressure should be felt at the outside of the opponent's knee.

⚠️ White Belt Warnings

**Incorrect Knee Angle**: Attempting the heel hook when the opponent's knee is not pointed upwards. This can lead to a dangerous twisting force on the ACL and MCL ligaments, causing tears.
**Slipping the Grip**: Releasing the figure-four grip prematurely while applying pressure. This can cause the opponent's foot to slip out, potentially resulting in a hyperextended knee or ankle sprain if you fall awkwardly.
**Over-Extending Hips Too Soon**: Driving hips forward with excessive force before securing the ankle and knee alignment. This can wrench the opponent's knee in an uncontrolled manner, risking ligament damage.

Drill Progressions

**Solo Isolation Drill**: Practice the grip setup and hip drive motion without a partner. Focus on achieving the correct figure-four grip and hip position. (10 reps per side)
**Partnered Isolation Drill (0% Resistance)**: With a partner lying on their back, practice isolating their leg and securing the figure-four grip. Partner offers no resistance. (5 reps per side)
**Controlled Entry Drill (25% Resistance)**: From the 50-50 guard (or a similar position), have your partner gently resist your leg isolation. Focus on securing the grip and hip control. (5 reps per side)
**Controlled Finish Drill (50% Resistance)**: Progress to applying gentle finishing pressure. Your partner should tap immediately upon feeling any discomfort. Communicate clearly. (5 reps per side)
**Simulated Rolling (75% Resistance)**: Practice the entire sequence in a controlled rolling scenario. Your partner can offer more dynamic resistance, but the emphasis is on clean technique, not speed. (3 rounds, 2 minutes each)
**Live Rolling (90% Resistance)**: Incorporate the Inside Heel Hook into live rolling, but with a strict understanding of tapping early and prioritizing safety. Focus on applying the technique when the opportunity arises. (5 rounds, 3 minutes each)

When to Use & Counters

**WHEN TO ATTEMPT**:
When you have established the 50-50 guard and your opponent's leg is trapped.
When your opponent attempts to stack you from the 50-50 guard, creating an opportunity to isolate their leg.
When your opponent is on their hands and knees and you can secure a leg entanglement from the side.
**PRIMARY COUNTERS**:
**The "Heel Hook Escape" (Hip Escape and Rotation)**: If the heel hook is applied, the defender should immediately perform a large hip escape away from the attacker and rotate their body to relieve pressure. This allows the ankle to come out of the "figure four" grip.
**The "Knee Protection" (Knee Tuck and Guard)**: The defender can attempt to tuck their heel towards their glutes, bending the knee as much as possible to reduce the lever arm and protect the joint. This makes it harder to isolate the heel.
**The "Leg Switch" (Counter-Entanglement)**: If the attacker is slow to finish, the defender can attempt to switch their leg to a different entanglement, like a straight ankle lock or even attempt to pass the guard if the opportunity arises.

Common BJJ Problems & FAQ

Q: Why does my ankle hurt when I try to do the Inside Heel Hook?

Your ankle might hurt because you are not properly isolating the opponent's heel and are instead applying pressure directly to the ankle joint itself. Ensure your grip is around the opponent's heel and Achilles tendon, and that your forearm is across the top of their foot. The pressure should be directed at hyperextending the knee, not twisting the ankle.

Q: How can I Inside Heel Hook a much bigger opponent?

Against a larger opponent, leverage and precision become even more critical than brute strength. Focus on controlling their hip and knee alignment first, using your body weight to pin their leg. Once you have a strong figure-four grip and their knee is pointing upwards, use a strong hip drive and a slight backward lean to create the finishing pressure. Don't try to muscle it; instead, create a tight, inescapable structure.

Q: When is the best time to transition to an Inside Heel Hook in a roll?

The best time is when you have achieved a dominant leg entanglement like the 50-50 guard, or when your opponent is on their hands and knees and you can secure a leg. Avoid attempting it from unstable positions where you might expose your own leg or fail to get the proper control, as this can lead to dangerous scrambles.

🥋 Related Techniques

Heel Hook Outside Heel Hook Knee Bar Toe Hold Calf Slicer

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Techniques that connect with Inside Heel Hook

50/50 Guard →Heel Hook →Leg Drag Pass →