How to Do the Aoki Lock in BJJ
The Aoki lock, named after Shinya Aoki, is a calf crusher applied by threading your foot behind the opponent's knee and bending their leg against your shin. It attacks the knee joint by hyperflexing it while simultaneously crushing the calf muscle against your leg bone. It is a sneaky attack from various leg entanglements.
✓ Key Details to Master
- 1 From an ashi garami or leg entanglement, control their ankle
- 2 Thread your foot behind their knee creating a fulcrum
- 3 Pull their ankle toward you while pushing your shin into the back of their knee
- 4 The bend in their knee creates extreme pressure on the joint
- 5 Keep your hips close to maintain the leverage angle
✗ Common Mistakes to Avoid
- ⚠️ Foot not deep enough behind the knee for proper leverage
- ⚠️ Not pulling the ankle firmly enough toward you
- ⚠️ Hips too far away reducing the crushing pressure
- ⚠️ Attempting from a loose leg entanglement without control
- ⚠️ Confusing this with a standard calf slicer position
🔄 Variations
- → From 50-50
- → From ashi garami
- → Transition from failed heel hook
- → From single leg X
🛡️ Counters & Defenses
- → Straighten the leg before the foot is threaded
- → Push the attacking foot out from behind the knee
- → Roll to relieve the pressure angle
- → Stand up and disengage
Track Your Aoki Lock Progress
Log every time you practice the Aoki Lock and watch your proficiency grow. MatTime helps you build muscle memory by tracking what you actually drill.
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Frequently Asked Questions
What belt level should I be to learn the Aoki Lock? ▼
The Aoki Lock is typically introduced at the brown belt level. However, higher belts continue to refine this technique throughout their BJJ journey. Mastering transitions and developing seamless movement between techniques.
Does this work in both gi and no-gi? ▼
The Aoki Lock works in both gi and no-gi, though grip adjustments may be necessary. In no-gi, focus on body control and underhooks instead of gi grips.
How do I set up the Aoki Lock? ▼
The Aoki Lock is typically executed from ashi garami. Key setups include controlling your opponent's posture and creating the right angle. Practice the entry repeatedly before focusing on the finish.