BJJ Ankle Lock: Straight Ankle Lock Technique and Rules

Contents

Straight Ankle Lock Mechanics

The straight ankle lock is the entry-level leg lock available to all belt levels. It targets the Achilles tendon and, while less dangerous than heel hooks, can still cause significant injury if applied aggressively.

Straight Ankle Lock Step by Step

Control the leg — trap it between your arms and chest
Place the blade of your wrist (karate chop side) against their Achilles tendon
Lock your hands in a figure-4 grip
Lean back and rotate your body outward (away from their body)
The rotation drives the wrist blade into the tendon

Ankle Lock Entries

Entry	Position	When
Single Leg X Bottom	Ashi garami	Standard entry to straight ankle lock
Guard Pass Intercept	Top position	When they kick a leg free as you pass
Turtle Ankle	Side of turtle	When they expose a foot

⚠️ Safety Note: Unlike heel hooks, the ankle lock provides more warning before injury. However, always use controlled pressure and stop at the tap. Never crank.

💡 Pro Tip: Don't cross your feet when applying the ankle lock — it exposes you to a heel hook counter. Keep your feet stacked or use the knee shield position to protect yourself.

Frequently Asked Questions

How does the straight ankle lock work?

The straight ankle lock targets the Achilles tendon. You place the blade of your wrist (the karate chop side) against the tendon, lock the figure-4 with your arm, and rotate your body outward while applying upward pressure on the heel.

Is the ankle lock legal for white belts?

The straight ankle lock is legal for all belt levels in IBJJF competitions. However, heel hooks and toe holds are restricted to higher belt divisions.

What is the difference between ankle lock and heel hook?

The ankle lock attacks the Achilles tendon (less dangerous). The heel hook attacks the knee ligaments by rotating the heel (more dangerous, restricted at lower belt levels in IBJJF).