KOSHI GATAME BASICS
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Ashi-Gatame·welcomematstevescott
Koshi Gatame (Hip Hold or Pin) is not a common pinning technique but is still a basic skill that should be mastered. Vie…
Ashi-Gatame
SubFamily足固め(Ashi-gatame)
TraditionalTranslation: leg hold
Overview
Ashi-gatame (足固め, 'leg hold') is an elbow lock where the attacker uses a leg to pin and isolate the opponent's arm against their own body, then applies hyperextension pressure to the elbow. [1],[2] The attacker typically drapes a leg across the opponent's chest or face while trapping the arm, using hip elevation to extend the elbow against the leg as a fulcrum. [1] Ashi-gatame is distinguished from the standard armbar by the specific use of the leg as both the pinning mechanism and the fulcrum rather than using both legs and hips. [1],[3]
History & Origin
Ashi-gatame is classified in Kodokan Judo's kansetsu-waza as a recognized elbow lock variation. [2],[3] The technique uses the leg as a controlling element, reflecting judo's systematic cataloging of different limb-locking configurations. [2] In BJJ, ashi-gatame principles appear in various armlock setups where the leg is used as a primary control and leverage point. [1]
Effectiveness
Ashi-gatame (leg-assisted armlock) uses the leg across the opponent's body to apply breaking pressure to the elbow joint. [1]
Lineage
Ashi-gatame is a classical judo armlock (kansetsu-waza) catalogued in the Kodokan system. [1]
Competition Record
Ashi-gatame and its variations are used in judo and BJJ competition. [1]
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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 guard — Control the wrist and posture, pivot hips perpendicular, throw leg over the head and extend hips to hyperextend the elbow
From mount — Isolate the arm, transition to S-mount or perpendicular, swing leg over and finish
From side control — Step over the head, isolate the near arm, fall back into the armbar position
Videos
TWO SUBMISSION TECHNIQUES FROM BOTTOM JUJI GATAME & SANKAKU JIME
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Ashi-Gatame·welcomematstevescott
This video shows how to effectively work from the bottom position applying different variations of Juji Gatame and Sanka…
PIN FOR TIME AND APPLY THE SUBMISSION TECHNIQUE 2 Pins and 3 Armlocks
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Ashi-Gatame·welcomematstevescott
This video shows how to control an opponent with Osaekomi Waza (Pinning Techniques) and apply different submission techn…
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3 videosWhat Instructors Say
Ashi-gatame, while not explicitly named in the transcripts as a standalone technique, is referenced within the broader context of pin-to-submission transitions taught by welcomematstevescott. The technique appears as a control mechanism during ground work, particularly from top positions where the practitioner uses leg placement—specifically knee positioning under the opponent's hips or buttocks—to immobilize and prevent bridge-out escapes. Stevescott emphasizes that in Sambo and freestyle judo contexts, the goal progresses from holding an opponent for time (earning points) to transitioning into submission techniques such as arm locks or chokes. The instructor demonstrates that effective control relies on precise knee placement and body pressure rather than hand grip alone, allowing the top player to maintain dominant positioning while setting up subsequent submissions. While the transcripts discuss related pinning concepts like koshi-gatame (hip hold) and kami-shiho-gatame (north-south position), the underlying principle of using leg positioning for immobilization—central to ashi-gatame—remains consistent across the demonstrated sequences. The technique functions primarily as a transitional control point rather than an end goal, valuable in submission grappling where pins alone cannot secure victory.
Synthesized from 3 instructors
- welcomematstevescott — KOSHI GATAME BASICS: Detailed discussion of hip control using knee placement under buttocks to prevent turning and escape, including belt grip variations and transitions to leg locks from side control.
- welcomematstevescott — TWO SUBMISSION TECHNIQUES FROM BOTTOM JUJI GATAME & SANKAKU JIME: Demonstrated feet-on-hips positioning and body control mechanics to set up arm lock transitions, including pressure application and base maintenance.
- welcomematstevescott — PIN FOR TIME AND APPLY THE SUBMISSION TECHNIQUE 2 Pins and 3 Armlocks: Illustrated the progression from pinning positions (north-south, case-of-katami) into submission finishes, emphasizing head control, arm isolation, and the tactical sequencing from immobilization to submission.
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Ratings
Risk of injury to the person this technique is applied to
7
Very High7/10
Ashi-gatame (leg-assisted armlock) uses the leg as a fulcrum against the elbow joint
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
— IBJJF — Legal at all belt levels
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
✓Ashi-gatame (leg-press armlock) uses the leg to press against the opponent's arm while controlling the wrist — applying the armbar without lying perpendicular (Kashiwazaki, Osaekomi, 1997)
✓The technique is applied from top positions: the attacker places their shin or thigh across the opponent's extended arm while securing the wrist with both hands
✓Ashi-gatame allows the attacker to maintain top position while attacking the arm — unlike the standard juji-gatame which requires transitioning to a perpendicular position
✓The leg provides the fulcrum: the shin presses against the back of the elbow while the hands pull the wrist upward — the elbow hyperextends against the leg
✓This technique is commonly used in judo ne-waza when the opponent extends an arm to prevent being pinned — the extended arm becomes the target
✓Ashi-gatame is a transitional submission: if it doesn't finish, the attacker can easily return to the pin or transition to another submission
✓The leg position must be precise: the shin must cross the arm at the elbow joint — too high or too low reduces the mechanical advantage
Common Mistakes
!Placing the leg too high on the upper arm — the shin must cross directly behind the elbow joint for the extension to work
!Not securing the wrist — both hands must control the wrist; a free hand allows the opponent to bend the arm
!Using the leg without pulling the wrist — the technique requires simultaneous leg pressure and wrist pull; one without the other is insufficient
!Abandoning top position for the lock — ashi-gatame's advantage is maintaining dominant position; don't sacrifice position for a loose attempt
!Not recognising when the technique is available — ashi-gatame works when the opponent extends an arm; don't force it when the arm is bent
!Applying with insufficient leg pressure — the leg must press firmly; light pressure allows the opponent to retract the arm
!Not transitioning when the lock fails — if the opponent bends the arm, immediately transition to a pin or another submission
Related Techniques
Counter Techniques
Setup Chain
1Control the Arm — isolate and grip the target arm
2Position the Hips — align hips perpendicular to the arm for maximum leverage
3Pinch Knees — squeeze knees together to prevent arm extraction
4Extend for the Finish — bridge hips up while pulling the wrist down to hyperextend the elbow
Sources & References
Primary Source
Kodokan Judo — Official Katame-waza Classification
1BookKodokan Judo — Official Katame-waza Classification
Kodokan — Ashi-gatame (足固め) classification
Standard Japanese martial arts terminology (kanji/hiragana)
3OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
4CitationKodokan Judo — Official Katame-waza Classification
Kodokan — Ashi-gatame (足固め) classification
Community
Athletics
Requires
hip flexibility, hip bridge power, leg clamping strength
Favours
long legs for controlling the opponent's torso
Key muscles
hip extensors (glutes), adductors, quadriceps, hamstrings
Sub-techniques
Notes
Ashi gatame (leg arm lock) is a Kodokan judo technique where the attacker uses their leg to press against the opponent's arm for an arm lock. The leg provides longer leverage than arm-on-arm techniques. (Kano, Kodokan Judo)
Frequently Asked Questions
What's the key to preventing my opponent from turning out of koshi-gatame?
According to Steve Scott, positioning your inside knee up under the opponent's buttocks is the key thing that keeps them from turning. You then simply ride them out while maintaining this control.
How does koshi-gatame limit my opponent's ability to escape?
Steve Scott explains that when executed properly with low positioning and good hip control, koshi-gatame takes away all of your opponent's mobility, making it very difficult for them to create space or transition out.
What submissions can I chain from koshi-gatame?
From koshi-gatame, Steve Scott notes you can transition to yokoshihogatami, knee on belly, and then into leg locks—a sequence commonly seen in Sambo where you can catch either leg with techniques like knee bars.
How does the Ashi-Gatame work?
Ashi-gatame (足固め, 'leg hold') is an elbow lock where the attacker uses a leg to pin and isolate the opponent's arm against their own body, then applies hyperextension pressure to the elbow. The attacker typically drapes a leg across the opponent's chest or face while trapping the arm, using hip elevation to extend the elbow against the leg as a fulcrum.
Where does the Ashi-Gatame come from?
Ashi-gatame is classified in Kodokan Judo's kansetsu-waza as a recognized elbow lock variation. The technique uses the leg as a controlling element, reflecting judo's systematic cataloging of different limb-locking configurations.
Is the Ashi-Gatame legal in competition?
IBJJF: legal — Legal at all belt levels; 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 Ashi-Gatame?
Danger rating 7/10. Ashi-gatame (leg-assisted armlock) uses the leg as a fulcrum against the elbow joint
How do I set up the Ashi-Gatame?
The standard setup chain: Control the Arm → Position the Hips → Pinch Knees → Extend for the Finish.
How do I defend against the Ashi-Gatame?
Standard counters include: Clasp Hands — grip own wrist to prevent arm extension / Stack — drive forward to compress the attacker and relieve elbow pressure / Hitchhiker Escape — rotate the thumb toward the mat and roll to extract the arm.
What are the variants of the Ashi-Gatame?
Common variants: Standard armbar (hips drive upward against the extended arm with legs clam…); Belly-down armbar (rolling to face the mat to prevent the opponent from stac…); S-mount armbar (transitioned from S-mount position for tighter control be…); Spinning armbar (rapid pivot from guard or side to catch the arm during tr…).
How effective is the Ashi-Gatame in competition?
Ashi-gatame and its variations are used in judo and BJJ competition.
What are common mistakes when doing the Ashi-Gatame?
Top errors to watch for: Placing the leg too high on the upper arm — the shin must cross directly behind the elbow joint for the extension to … / Not securing the wrist — both hands must control the wrist; a free hand allows the opponent to bend the arm / Using the leg without pulling the wrist — the technique requires simultaneous leg pressure and wrist pull; one withou… / Abandoning top position for the lock — ashi-gatame's advantage is maintaining dominant position; don't sacrifice posi….
What are other names for the Ashi-Gatame?
The Ashi-Gatame is also known as Ashi-gatame, Leg Armlock, Foot-Pin Armbar, Leg Arm Lock.