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Ankle Lock·Tyler Spangler
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Ankle Lock
Family足首固め(Ashikubi-gatame)
TraditionalTranslation: ankle lock
Overview
Ankle locks are submissions that attack the ankle joint — primarily by hyperextending the talocrural joint (straight ankle lock) or rotating the subtalar joint (toe hold). [1],[3] The straight ankle lock (ashi-garami / achilles lock) uses a figure-four grip around the opponent's foot to lever the ankle into hyperextension, stressing the anterior talofibular ligament. [4] The toe hold applies rotational force to the foot, stressing the ankle and knee simultaneously. Ankle locks are entry-level leg attacks — the straight ankle lock is the first leg lock permitted under IBJJF rules (legal at all belt levels in no-gi). [1] They serve as foundational techniques in leg lock systems, often used to create reactions that expose the heel for more advanced attacks. [5]
History & Origin
Ankle locks have been part of multiple grappling traditions. In judo, ashi-garami (足絡み, leg entanglement) is classified in the broader kansetsu-waza framework, though leg locks are not permitted in standard judo competition. [2],[3] Sambo has historically featured ankle locks as standard competition techniques, with the straight ankle lock being one of the most common submissions in sport sambo. In Brazilian Jiu-Jitsu, the ankle lock was long considered a lower-level technique until the leg lock revolution of the 2010s elevated all leg attacks — including ankle locks as gateway entries to heel hook and calf slicer systems. [4],[5]
Effectiveness
The straight ankle lock (ashi-hishigi) hyperextends the ankle by wrapping the forearm blade against the Achilles tendon and arching the hips. [1] It is the most fundamental and widely legal leg lock, permitted at all belt levels in IBJJF. [2] While often escaped at higher levels, it remains effective as both a finish and as a gateway to other leg attacks. [3]
Lineage
Competition Record
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Biomechanical Mechanism
Primary Action — Hyperextension of the elbow joint — the hips drive upward against the posterior humerus while controlling the wrist
Joints Involved — Elbow (extension beyond normal ROM), wrist (stabilized), shoulder (isolated and controlled)
Force Vector — Posterior-to-anterior force on the upper arm with fixed distal anchor at the wrist creates a lever arm across the elbow
Leverage Principle — Hips act as the fulcrum — the longer the lever (full arm extension), the less force needed to hyperextend
Position & Entry
From open guard (bottom) — Secure the ankle with forearm blade against the Achilles tendon, fall back with legs controlling the hip, arch to finish
From standing (during guard pass) — Grip the exposed ankle, sit back to ashi garami position and apply the lock
From top position (leg weave) — During passing, entangle the leg, secure the ankle grip and transition to the lock
Videos
How I Ankle Lock EVERYONE (almost)
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Ankle Lock·Ebsayz
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Ratings
Risk of injury to the person this technique is applied to
6
High6/10
Straight ankle locks attack the Achilles tendon and ankle joint; lower injury risk than heel hooks
Skill level needed to execute this technique reliably
Intermediate
Whether this technique is allowed under major competition rule sets
Illegal
— kansetsu-waza
IJF Sport and Organisation Rules 2025, Article 27PDFLegal
— straight ankle lock
IBJJF Rules Book v6.0, June 2024PDF— ADCC — Legal — all submissions legal in ADCC
ADCC Rules Update, April 2025PDF— Unified MMA — Legal submission technique
Unified Rules of MMA, August 2025PDF— FIAS Sport Sambo — Legal
FIAS International Sambo Competition RulesPDF— FIAS Combat Sambo — Legal
FIAS Combat Sambo RulesPDFTraining Notes
✓The ankle lock (straight ankle lock, ashi-gatame) attacks the ankle joint by hyperextending it backward while controlling the opponent's hip and leg (Danaher, Leg Lock Anthology, 2019)
✓The straight ankle lock is the safest and most fundamental leg submission — it is legal at all levels of competition in IBJJF, ADCC, and MMA
✓The mechanic: the attacker's forearm (wrist bone, specifically the radius) acts as a fulcrum against the Achilles tendon while the body arches backward — extending the ankle past its natural range
✓Ankle lock control requires the ashi garami (leg entanglement) position: the attacker's legs control the opponent's hip and knee while the arms apply the lock
✓The key to finishing the ankle lock is hip position: the hips must drive forward into the opponent's leg while the upper body arches — creating a bowing effect
✓The ankle lock has three finishing mechanics: straight extension (standard), rotational (belly-down), and compression (figure-four squeeze)
✓The straight ankle lock is the gateway to all leg locks — mastering its mechanics creates the foundation for heel hooks, kneebars, and calf slicers
Common Mistakes
!Squeezing with the arms only — the ankle lock finishes with a full-body arch (hips forward, shoulders back), not arm strength
!Not controlling the opponent's knee line — if the knee is free, the opponent can rotate and escape; lock the knee in place with your legs
!Placing the wrist bone in the wrong position — the blade of the wrist must sit on the Achilles tendon, not on the ankle bone or calf
!Crossing the feet in ashi garami — crossed feet can be used against you; triangle your legs or keep them properly positioned
!Not driving the hips forward — the hip bridge creates the primary breaking force; without it, the lock relies on insufficient arm strength
!Attempting from too far away — the ankle must be deep in the armpit; if there's space, the opponent pulls the foot out
!Ignoring the belly-down finish — when the standard finish is defended, rotating belly-down adds rotational force that often catches the defence
Related Techniques
Counter Techniques
Setup Chain
1Establish Position — achieve the controlling position needed for this submission
2Create the Threat — begin the submission setup to force a defensive reaction
3Secure the Hold — lock the submission grip with proper body mechanics
4Finish — apply increasing pressure until the opponent taps or the joint/choke takes effect
Sources & References
Primary Source
Kodokan Judo — broader Kansetsu-waza classification
1BookKodokan Judo — broader Kansetsu-waza classification
Japanese terminology sourced from Kodokan Judo — broader Kansetsu-waza classification
Official Kodokan ground technique classification system
Standard Japanese martial arts terminology (kanji/hiragana)
4OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
5CitationKodokan Judo — broader Kansetsu-waza classification
Japanese terminology sourced from Kodokan Judo — broader Kansetsu-waza classification
Community
Athletics
Requires
forearm blade pressure, hip extension power, body arching
Favours
strong forearms and back extensors
Key muscles
forearm extensors, erector spinae, glutes, hip extensors
Sub-techniques
From Prone Control
SubFamilyAnkle locks from prone control (ashi-garami position) are applied when the attacker controls the opponent's leg while both fighters are on the ground, typically with the attacker lying on their back and the opponent's foot trapped against the chest. [1,2] The standard straight ankle lock entry involves falling to the hip while hugging the opponent's foot, then bridging to hyperextend the ankle. [3,4]
Explore
Toe Hold
SubFamilyThe Toe Hold is a foot lock submission that attacks the ankle and foot by gripping the opponent's toes/ball of foot and rotating the foot outward (or inward) using a figure-four grip — creating torsional stress on the ankle ligaments, the small joints of the foot, and the knee. [1] The toe hold is one of the four fundamental leg lock submissions (alongside the heel hook, kneebar, and straight ankle lock) and is applicable from various ashi garami positions, 50/50, and even from top positions during guard passing. [1,2] While considered less devastating than the heel hook, the toe hold is still a powerful submission that can cause ankle ligament tears, metatarsal fractures, and knee damage — it was the technique used by Frank Mir to break Tim Sylvia's arm (forearm, actually, but the toe hold principle applies to its foot target) and has finished numerous high-level grappling matches. [2,3] The toe hold is legal at brown and black belt in IBJJF (both gi and no-gi), making it the most accessible rotational foot lock in mainstream BJJ competition. [3]
1 genera·1 techniquesExplore
Notes
The straight ankle lock (ashi-garami) is the only leg lock legal at all belt levels in IBJJF competition. It targets the Achilles tendon and ankle joint through hyperextension. (IBJJF Rules v6.0; Ribeiro, Jiu-Jitsu University)
Frequently Asked Questions
Where should I grip the ankle to get maximum leverage?
Tyler Spangler emphasizes that you should grip as far over the toes as possible with your lat, not over the calf, as hooking the calf gives you no leverage.
What's the easiest ankle lock entry to learn?
Tyler Spangler identifies Single Leg X as entry number two and probably the easiest to learn, as it's an extremely common position that can be used when people are standing above you or even when they're low to the ground.
What are the two key things I need to control in a Single Leg X ankle lock?
According to Ebsayz, you need to put weight through your opponent's hips and keep weight out of their leg by holding it nice and high.
How should I position my elbow when finishing the ankle lock?
Ebsayz recommends keeping your elbow wide with space between your elbow and ribs; if you lock it too tight, you'll need much more force to finish the submission.
How does the Ankle Lock work?
Ankle locks are submissions that attack the ankle joint — primarily by hyperextending the talocrural joint (straight ankle lock) or rotating the subtalar joint (toe hold). The straight ankle lock (ashi-garami / achilles lock) uses a figure-four grip around the opponent's foot to lever the ankle into hyperextension, stressing the anterior talofibular ligament.
Where does the Ankle Lock come from?
Ankle locks have been part of multiple grappling traditions. In judo, ashi-garami (足絡み, leg entanglement) is classified in the broader kansetsu-waza framework, though leg locks are not permitted in standard judo competition.
Is the Ankle Lock legal in competition?
IBJJF: legal — Legal at all belt levels (straight ankle lock); IJF: banned — Only elbow joint locks (kansetsu-waza) permitted in judo — all other joint lo…; ADCC: legal — Legal — all submissions legal in ADCC; Unified MMA: legal — Legal submission technique; FIAS Sport Sambo: legal — Legal; FIAS Combat Sambo: legal — Legal
How dangerous is the Ankle Lock?
Danger rating 6/10. Straight ankle locks attack the Achilles tendon and ankle joint; lower injury risk than heel hooks
How do I set up the Ankle Lock?
The standard setup chain: Establish Position → Create the Threat → Secure the Hold → Finish.
How do I defend against the Ankle Lock?
Standard counters include: Early Recognition — identify the submission attempt early and begin defence immediately / Posture and Base — maintain strong posture and base to prevent submission setups / Grip Fight — deny the attacker their preferred gripping configuration.
What are the variants of the Ankle Lock?
Common variants: Standard straight ankle lock (forearm blade on the Achilles tendon, arching backward); Bellator-style ankle lock (tighter knee pinch with shoulder on the shin for added co…); Standing ankle lock (applied during a scramble from the feet); Ankle lock from top (applied after a guard pass when the foot is exposed).
How effective is the Ankle Lock in competition?
The straight ankle lock is the most commonly attempted leg lock in IBJJF competition due to its legality at all belt levels. In sambo, ankle locks are among the most frequent submission finishes at world championship level.
What are common mistakes when doing the Ankle Lock?
Top errors to watch for: Squeezing with the arms only — the ankle lock finishes with a full-body arch (hips forward, shoulders back), not arm … / Not controlling the opponent's knee line — if the knee is free, the opponent can rotate and escape; lock the knee in … / Placing the wrist bone in the wrong position — the blade of the wrist must sit on the Achilles tendon, not on the ank… / Crossing the feet in ashi garami — crossed feet can be used against you; triangle your legs or keep them properly pos….
What are other names for the Ankle Lock?
The Ankle Lock is also known as Ashikubi-gatame, Ashi-kansetsu, Ankle Joint Lock, Foot Lock.