Four common leg-lock families
A straight ankle lock applies pressure to the foot and ankle. A kneebar uses control of the leg to apply extension at the knee. A toe hold uses a figure-four grip on the foot; a heel hook controls the heel while the entanglement limits rotation. Changing the grip or direction can change the attack and its legality.
Do not divide them into safe locks that hurt first and dangerous locks that do not. Any can injure. Early drills teach recognition and controlled positioning with a tap-and-release agreement, rather than a test of pain tolerance.
Positions come before finishes
Ashi garami, single-leg X, outside ashi, 50/50 and the saddle describe related but distinct leg positions. Terminology varies between schools. The practical questions are where the knees are, which leg is trapped, whether the opponent can turn or stand, and what is happening to your own legs.
The knee line describes whether a knee remains inside the controlling legs or has moved beyond them. Not every lock requires identical control, and clearing one connection does not automatically make the whole position safe. Learn each configuration before linking them.
Straight ankle lock versus kneebar
The straight ankle lock is allowed from adult white belt under IBJJF rules, subject to the permitted position and movement. The kneebar is not: brown and black belts may use it in Adult and Masters divisions. Calling both straight locks does not make both beginner-legal.
Separate entry and control from finishing. Can you establish the intended position without losing balance or allowing the opponent to turn freely? Can you recognize when they have cleared it? Let your coach set when finishing pressure and resistant rounds enter that progression.
Toe holds and heel hooks are different attacks
A toe hold uses a figure-four grip on the foot; a heel hook uses heel control and rotation against a trapped leg. Under IBJJF rules, permitted toe-hold variations are available to Adult and Masters brown and black belts in gi and no-gi. Heel hooks have the narrower Adult brown/black no-gi exception.
A familiar entanglement does not make every finish legal. Outward-pressure toe holds and particular turning directions have their own restrictions in the IBJJF chart. Establish exactly what your gym and competition allow before a leg-lock round.
Early defense
Deny the entry, hand fight, manage the free leg and work to clear the relevant leg control. The correct direction depends on the entanglement and attack. Turning a knee away is not a universal escape instruction.
Do not spin explosively against a captured heel. If you cannot identify a controlled escape from a secured submission, tap and reset. Practice directions first from agreed positions with the finishing grip inactive, so uncertainty does not become joint pressure.
The rules: IBJJF, ADCC, sambo and UWW
IBJJF: straight ankle locks are available from adult white belt. Kneebars, toe holds and biceps/calf slicers are permitted for Adult and Masters brown and black belts. Heel hooks and knee reaping are permitted only in Adult brown and black belt no-gi divisions, not Masters and not gi. Grips, turning direction and position still matter.
ADCC professional events and Open divisions have different age and experience categories. Submission-only is a format description, not a shared list of legal attacks. Check the organizer's division rules rather than assuming every adult event allows heel hooks.
FIAS sport sambo permits leg submissions subject to its prohibited-action list and ground-fighting rules. A leg submission must stop when the defender reaches a standing position. UWW grappling has separate age and skill categories. Check the relevant document instead of treating a BJJ belt color as permission in another sport.
Ask a precise leg-lock question
Identify the position and rules you train under. For example: 'I am an adult white belt training gi. How do I recognize when my ankle-lock entry becomes an illegal reaping position?' That gives a coach a clearer problem than a request for the fastest finish.
Choose one position from this guide to recognize at your next class. With an active BORETS LAB membership, you can study related lessons. For personal feedback, open a consultation in your account. Include the starting position and the moment you lost control so the coach can address the detail you need.
Related video lessons
See the technique in action and study the details with BORETS. Watch with a school membership.
Ankle Lock: Direct Entry into Leg ControlIevgen Skyrda
Calf Slicer from Turtle: Sambo Leg LockKostya Zhyvanov
Leg Lock Against a Turning OpponentIevgen Skyrda
Leg Locks from a Single LegIevgen Skyrda
Common questions
Are leg locks allowed at white belt in BJJ?
IBJJF adult white belts may use a permitted straight ankle lock, but not kneebars, toe holds or heel hooks. The position and turning direction still matter. Other events can use different restrictions.
Are heel hooks legal in IBJJF Masters?
No. The IBJJF heel-hook exception applies to Adult brown and black belt no-gi divisions. It does not extend to Masters or to gi competition.
Build a more complete grappling game.
Learn from the team that developed homegrown black belts and an adult ADCC Trials finalist at 16.
One membership unlocks every published lesson in sambo, BJJ, freestyle wrestling, strength and conditioning, and mental preparation. Pick your focus, study the details and take them into your next session.
1,340 UAH / month · 13,400 UAH / year
Payments are charged in Ukrainian hryvnia (UAH). Your bank determines the conversion to your currency.
Continue reading
- Sambo Leg Locks for BJJ, Grappling & MMAExplore sambo leg locks for BJJ, grappling and MMA with Kostya Zhyvanov: 11 lessons covering ankle locks, kneebars, calf slicers and hip locks.
- Combat Sambo Rules: How They Differ from Sport SamboCompare adult FIAS combat and sport sambo rules: strikes, chokes, joint locks, scoring and equipment, with the important category restrictions.
- BJJ Competition Rules: Points, IBJJF Age Divisions and Match TimesIBJJF rules explained: scoring, match times, age divisions by birth year, weigh-ins and legal submissions. Know what to check before your first BJJ tournament.
- Straight Ankle Lock (Achilles Lock): Control and DefenseStudy the straight ankle lock, also called an Achilles lock: leg control, early defense and the differences between IBJJF, ADCC and sport sambo rules.