Arm Triangle Choke — From Knee-on-Belly – Reverse Angle
Variety肩固め（膝乗せから）(Kata Gatame — Reverse Angle, From Knee-on-Belly)
TraditionalTranslation: Shoulder Hold / Head-and-Arm Choke — Reverse Angle from Knee-on-Belly
Overview
A kata gatame (head-and-arm choke) applied from knee-on-belly using a **reverse finishing angle**. Instead of walking your chest toward the opponent’s head (standard finish), you rotate so your head and chest face more toward the opponent’s **hips**, tightening the head-and-arm seal with shoulder drop and elbow adduction. This is an arm-triangle throughout—no leg triangle involved.
History & Origin
Modern BJJ adaptation of kata gatame emphasizing alternate finishing angles from knee-on-belly; commonly taught as a way to finish when the standard head-side walk meets stubborn frames.
Effectiveness
The reverse angle seals space that persists in the standard arm triangle entry, making it effective against opponents who create frames on the choking-side hip. [1]
Lineage
The reverse-angle arm triangle from KOB approaches the choke from the opposite side, catching opponents who defend the standard entry. [1]
Competition Record
This advanced variation is seen at high-level BJJ competition. [1]
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Biomechanical Mechanism
Position & Entry
Variants
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Ratings
Risk of injury to the person this technique is applied to
Direct vascular choke from dominant top control; once sealed, loss of consciousness can occur quickly.
Skill level needed to execute this technique reliably
Whether this technique is allowed under major competition rule sets
Training Notes
Common Mistakes
Related Techniques
Counter Techniques
Setup Chain
Sources & References
Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Japanese terminology sourced from Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Official Kodokan ground technique classification system
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
Japanese terminology sourced from Kodokan Judo — Official Katame-waza Classification (肩固め Kata-gatame)
Community
Athletics
hip flexibility, long legs relative to torso
longer limbs for easier figure-four lock around head and arm
hip adductors, hamstrings, quadriceps
Notes
“Reverse” in this entry refers to the finishing **body angle of kata gatame (arm triangle choke)**, where the attacker rotates chest/head toward the opponent’s hips instead of toward the head. This is not to be confused with the **reverse triangle (gyaku sankaku jime)**, which is a leg-based choke belonging to the sankaku family.
Frequently Asked Questions
How does the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle work?
A kata gatame (head-and-arm choke) applied from knee-on-belly using a **reverse finishing angle**. Instead of walking your chest toward the opponent’s head (standard finish), you rotate so your head and chest face more toward the opponent’s **hips**, tightening the head-and-arm seal with shoulder drop and elbow adduction.
Where does the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle come from?
Modern BJJ adaptation of kata gatame emphasizing alternate finishing angles from knee-on-belly; commonly taught as a way to finish when the standard head-side walk meets stubborn frames.
How dangerous is the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
Danger: 9/10 | Direct vascular choke from dominant top control; once sealed, loss of consciousness can occur quickly.
How do I set up the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
The standard setup chain: Achieve Controlling Position → Isolate the Neck → Set the Grip → Apply Pressure.
How do I defend against the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
Standard counters include: Tuck Chin — protect the neck by lowering the chin to prevent the choke from sinking / Two-on-One Grip Fight — use both hands to strip the choking grip before it locks / Turn Into — rotate toward the choking arm to relieve carotid pressure / Posture Up — straighten the spine and create distance to break the choking angle.
What are the variants of the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
Common variants: Standard (head-side) KOB arm triangle finish; Reverse-angle finish to mounted kata gatame; Reverse-angle finish with wrist-control feed; Reverse-angle to d’arce/anaconda switch if arm slips Training Notes Maintain **knee ride pressure** to pin hips; Keep the opponent’s **elbow high and across**; if it drops under the chin, re-feed; The finish comes from **angle + shoulder drop**, not just arm squeeze; If space remains, rotate a touch more toward hips or transition to mount for tighter compression..
How effective is the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle in competition?
This advanced variation is seen at high-level BJJ competition.
What are common mistakes when doing the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
Top errors to watch for: Leaning too far forward (risking sweep) / Trying to finish without the arm truly across the neck / Keeping head too high (leaves space) / Squeezing without rotating to reverse angle—becomes neck crank instead of clean choke..
What are other names for the Arm Triangle Choke — From Knee-on-Belly – Reverse Angle?
The Arm Triangle Choke — From Knee-on-Belly – Reverse Angle is also known as Kata Gatame — Reverse Angle, From Knee-on-Belly, Reverse Arm Triangle from KOB, Reverse-Angle Kata Gatame, Knee Ride Reverse Head-and-Arm.