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Heel Hook BJJ: Inside, Outside & Safety Guide
The heel hook can injure a knee before your body even feels a warning. Here is how the position works, and how to train it safely.
What Makes the Heel Hook Different
The heel hook is the most dangerous submission in grappling. Most joints send warning pain early. The knee does not work that way. Its ligaments have very little nerve sensitivity. Real damage can happen before your body signals danger. That's why heel hooks carry strict rules most other submissions don't.
The Position: Ashi Garami
Most heel hooks start from a leg entanglement called ashi garami. Your legs control your opponent's trapped leg. You off-balance them onto their side or back. The modern "saddle" position gives you the strongest control. It also gives the cleanest finishing angle. 50/50 guard is the entanglement most people recognize from competition footage, though the saddle offers a cleaner, less symmetrical version of the same control.
Inside vs Outside Heel Hook
- Inside heel hook: you rotate the heel inward. This twists the knee from the inside.
- Outside heel hook: you rotate the heel outward. It's a different angle on the same joint.
Both work well. Which one you get usually depends on which side of the leg you control.
Why Control Comes Before Finishing
Do not chase the finish before you have full control. Beginners often rush straight to the heel. They skip controlling the hip. They skip trapping the leg fully. That's how accidental injuries happen. Build the position first. The submission comes second.
Competition Legality
Heel hooks are illegal for most belts under IBJJF rules. Even where legal, many gyms limit them to slow drilling only. Check your academy's rules first. Check your training partner's experience too, before going live. The toe hold is a related small-joint foot attack with its own separate legality rules, often grouped in the same conversation but permitted earlier at most belts.
Training Heel Hooks Safely
Drill the position slowly. Add pressure only once the position feels solid. Tap early and often when caught. Heel hooks give almost no warning before something tears. Respect between training partners matters more here than with any other submission in the sport.
Our kneebar guide and straight ankle lock guide cover safer entry points into the leg lock game.
Tagged with:#heel hook#leg locks#no-gi#safety
Frequently Asked Questions
Why is the heel hook considered so dangerous?
It attacks knee ligaments with very little nerve sensitivity, so real damage can occur before pain warns you. This is different from most submissions, which give a clear warning before injury.
Are heel hooks legal in BJJ competition?
They are illegal for most belts under IBJJF rules. Legality varies by federation and belt level, so always check the specific ruleset before competing.
How do you defend a heel hook?
Defend the position before the finish. Keep your hips squared and fight to free your trapped leg from the saddle early, since once the heel is controlled and rotation starts, escape windows close fast.
What is the difference between an inside and outside heel hook?
An inside heel hook rotates the heel inward, twisting the knee from the inside. An outside heel hook rotates it outward. Which one you get usually depends on which side of the leg you control.
Sources & Further Reading
About the Author
Mohsin AyubBJJ practitioner, 6 years — Gracie Barra
Founder & Editor, BJJ Sportswear
Mohsin has trained Brazilian Jiu-Jitsu for six years at Gracie Barra and has competed at IBJJF-affiliated tournaments. He writes about competition, gear, and athlete careers, and founded BJJ Sportswear to help grapplers find equipment and information they can trust.
- Six years training Brazilian Jiu-Jitsu at Gracie Barra
- Competed at IBJJF-affiliated tournaments
- Writes on BJJ competition, gear testing, and athlete careers
This article was last reviewed and updated on 2026-08-01.