Straight Ankle Lock
Primary straight foot lock attacking the ankle — legal at all adult belts in IBJJF and essential in no-gi leg entanglements.
joint lock
Overview
The straight ankle lock attacks the ankle by controlling the foot and rotating your hips while your forearm cuts into the Achilles tendon. It is the gateway leg lock for beginners and remains high-percentage at elite no-gi levels from ashi garami and fifty-fifty.
#Setup
- Control the foot at the toes or ball — never the heel alone.
- Place your forearm blade across the Achilles with the foot on your chest or hip.
- Pinch knees on the leg and fall to your side for hip alignment.
#Execution
- Arch hips forward while pulling the toes toward your chest.
- Keep the knee line controlled — rotation at the knee reduces breaking pressure.
- Apply pressure slowly; ankle locks tap fast when the line is correct.
#Finishing
- Fall to the outside hip on the controlled leg.
- Reap rules vary by federation — know your competition ruleset.
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Safety Note
Straight ankle locks tap quickly and can injure if ripped. Align the Achilles line, apply progressive hip extension, and release on tap even when the hold feels light.
Primary Targets
- Ankle
- Achilles
Key Concepts
- Control the foot, not the knee — knee line control prevents escapes.
- Hip extension beats arm strength.
- Straight ankle lock is the foundation before learning heel hooks.
Primary Entries
- Single-leg X and standard ashi garami entries.
- Fifty-fifty when both legs entangle.
- Back-step passes that expose the trailing foot.
Defenses & Counters
- Expect heel hides and knee-line pummels — re-control the foot before extending hips.
- Watch for turns that clear your secondary hook; follow into fifty-fifty or disengage safely.
- If they extract the foot, abandon early rather than chasing a broken ashi with arm strength alone.
Follow-Ups
- Fifty-fifty when they turn to escape the ashi finish.
- Back take if they hide the foot and expose their back.
- Secondary leg attacks when the leg straightens but entanglement remains.
- Fifty-fifty when they turn to escape.
- Back take when they hide the foot.
- Secondary leg attacks when they straighten the leg.
Training Drills
- Ashi garami control rounds without finishing.
- Hip extension reps with partner feedback on tap timing.
- Foot exposure drills from guard retention.
Related Techniques
Deepen your study with complementary positions and attacks.
Summary
Start leg-lock education with the straight ankle lock. Control the foot, align your hips, and extend with patience — it is legal, effective, and teaches the control needed for advanced leg entanglements.