The First Five Leg Attacks You Need | Jiu-Jitsu Submissions
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EM Ankle Lock·Knight Jiu-Jitsu
We have learned by now not to ignore 50% of the human body. But where to start with leg attacks? In this video, I show s…
EM Ankle Lock
SubFamilyTranslation: EM заключване на глезена
Overview
EM Ankle Lock е заключване на глезена, влизането в което се извършва чрез серията Electric Chair, атакувайки крака, когато противникът защитава прехвата или финала Electric Chair. [1]
Electric Move Ankle LockEM Lock
History & Origin
Разработен от Еди Браво като част от системата за финали на 10th Planet. [1]
Effectiveness
Доказан в EBI и в професионална MMA надпревара. [1]
Lineage
10th Planet Jiu-Jitsu; Еди Браво. [1]
Competition Record
Използван в EBI и в UFC надпревари
Images
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Biomechanical Mechanism
Основно действие — Специфична механика на финала EM Ankle Lock от позиция rubber guard
Position & Entry
От rubber guard — Преход през позиции към EM Ankle Lock
Variants
Not yet documented
Videos
Straight Ankle Lock for White Belts (Powerful Details for More Finishes)
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EM Ankle Lock·Chewjitsu
As leg locks become more and more popular in BJJ a common question from newer White Belts is "Should I learn leg locks?"…
2 videos
What Instructors Say
The EM Ankle Lock, also referred to as the straight ankle lock, is a foundational leg-lock submission that attacks the ankle joint by applying perpendicular pressure to the Achilles tendon with the forearm. Both Knight Jiu-Jitsu and Chewjitsu emphasize similar mechanical principles: the attacker must position the foot low, with the opponent's toes tucked into the armpit rather than high on the calf, to ensure force targets the joint rather than muscle tissue. Knight Jiu-Jitsu describes the grip as "guillotine style," achieved by wrapping the hands in a rear-naked-choke configuration, while Chewjitsu details both guillotine and figure-four grip options and notes that a gi collar can be used to control an opponent who sits up. Both instructors advocate finishing with lateral shoulder movement to the floor and hip extension, with Knight Jiu-Jitsu emphasizing leading with the head while Chewjitsu stresses pinching the knees tight and turning face-down for full extension. Entry points differ slightly: Knight Jiu-Jitsu shows setup from open guard with foot positioning, while Chewjitsu presents entries from passing positions and sweep variations. Chewjitsu uniquely addresses competition legality for white belts and warns against the "reap" penalty by controlling hip placement with the non-attacking leg. Both acknowledge the technique's accessibility and effectiveness as a competition submission across belt levels.
Synthesized from 2 instructors
- Knight Jiu-Jitsu — The First Five Leg Attacks You Need | Jiu-Jitsu Submissions: Detailed mechanics of foot positioning, grip styles (guillotine and figure-four), and finishing with lateral shoulder and head-lead hip extension; showed entries from open guard and transitions to saddle position.
- Chewjitsu — Straight Ankle Lock for White Belts (Powerful Details for More Finishes): Emphasized low ankle positioning (toes in armpit), multiple grip options and collar control, entries from passing and sweep positions, competition legality, and reap penalty avoidance through hip and secondary-leg placement.
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Ratings
Risk of injury to the person this technique is applied to
8
Very High8/10
Финал с потенциал за приключване на мача
Skill level needed to execute this technique reliably
Advanced
Whether this technique is allowed under major competition rule sets
Illegal
— канsetsu-waza
IJF Sport and Organisation Rules 2025, Article 27PDFLegal
— право заключване на глезена
IBJJF Rules Book v6.0, June 2024PDF— ADCC — Разрешено — всички финали са позволени в ADCC
ADCC Rules Update, April 2025PDF— Unified MMA — Разрешена техника за финал
Unified Rules of MMA, August 2025PDF— FIAS Sport Sambo — Разрешено
FIAS International Sambo Competition RulesPDF— FIAS Combat Sambo — Разрешено
FIAS Combat Sambo RulesPDFTraining Notes
✓Изисква стабилна основа в rubber guard (Bravo, 2006)
✓Комбинирай с другите атаки на 10th Planet
Common Mistakes
!Бързане без правилна позиция
!Загуба на контрол върху крака преди финала
Related Techniques
Counter Techniques
Setup Chain
1Rubber guard → Верига от позиции → EM Ankle Lock
Sources & References
Primary Source
Mastering the Rubber Guard (Bravo, 2006)
1Book[1] Bravo, E. with Krauss, E. and Cordoza, G. (2006). Mastering the Rubber Guard: Jiu-Jitsu for Mixed Martial Arts Competition. Victory Belt Publishing.
2Citation[1] Bravo, E. with Krauss, E. and Cordoza, G. (2006). Mastering the Rubber Guard: Jiu-Jitsu for Mixed Martial Arts Competition. Victory Belt Publishing.
[1] Bravo, Mastering the Rubber Guard (2006) — technique description and application
Community
Athletics
Гъвкавост в бедрата
Издръжливост на хвата
Контрол над тялото
Notes
EM Ankle Lock е техника за заключване на крака от системата 10th Planet, документирана в Mastering the Rubber Guard. Тя е част от системата за атаки с крак на Браво, интегрирана с позициите half guard и rubber guard. (Bravo, Mastering the Rubber Guard, 2006)
Frequently Asked Questions
Where should I position my body when applying an ankle lock?
Chewjitsu emphasizes keeping your body low and positioned directly on the ankle joint, not high up on the calf. If you can see the opponent's toes when looking over your shoulder, you're positioned too high, which can lead to nasty calf snaps rather than controlled ankle submissions.
How should I grip and finish an ankle lock?
Tuck the opponent's toes into your armpit and use a bicep flex position to control the leg. When finishing, pinch your knees tight, turn face-down, and get full extension to maximize the break potential, as Knight Jiu-Jitsu also recommends using a guillotine-style grip on the foot.
What's the proper foot placement for my non-attacking leg in an ankle lock?
Chewjitsu stresses that you should cup your non-attacking foot around the opponent's hip like a hand for control, and avoid casually placing it in the center of their body, as this creates vulnerability to heel hook counters and reduces control of the opponent's leg.
When should white belts start learning ankle locks?
Chewjitsu recommends white belts learn ankle locks early for both safety and competitive preparation, as learning leg locks for the first time at higher belt levels is ineffective. If you commit to mastering leg locks, dive in fully rather than dabbling casually.
Как работи EM Ankle Lock?
EM Ankle Lock е заключване на глезена, влизането в което се извършва чрез серията Electric Chair, атакувайки крака, когато противникът защитава прехвата или финала Electric Chair.
Откъде произлиза EM Ankle Lock?
Разработен от Еди Браво като част от системата за финали на 10th Planet.
Разрешена ли е EM Ankle Lock в състезания?
IBJJF: легална — Разрешено на всички нива на колани (право заключване на глезена); IJF: забранена — В джудо са разрешени само заключвания на лакътната става (канsetsu-waza) — вс…; ADCC: легална — Разрешено — всички финали са позволени в ADCC; Unified MMA: легална — Разрешена техника за финал; FIAS Sport Sambo: легална — Разрешено; FIAS Combat Sambo: легална — Разрешено
Колко опасна е EM Ankle Lock?
Оценка на опасност 8/10. Финал с потенциал за приключване на мача
Как се подготвя EM Ankle Lock?
Стандартната верига за подготовка: Rubber guard → Верига от позиции → EM Ankle Lock.
Как да се защитя срещу EM Ankle Lock?
Стандартните контри включват: Изправяне на стойка / Стек / Преминаване на гарда.
Колко ефективна е EM Ankle Lock в състезания?
Използван в EBI и в UFC надпревари
Какви са честите грешки при изпълнение на EM Ankle Lock?
Основни грешки, за които да внимавате: Бързане без правилна позиция / Загуба на контрол върху крака преди финала.
Какви други имена има EM Ankle Lock?
EM Ankle Lock е известна също като EM Ankuru Rokku, Electric Move Ankle Lock, EM Lock.