Inside Heel Hook
The inside heel hook — primary submission from cross ashi and the saddle. Internal rotation loads the ACL and medial knee, the highest-finish leg lock in no-gi.
Adapted from InGrappling, Inside Heel Hook. System Games did not invent this curriculum.
Manage injuries →Position map Connects to 13 positions across 4 relationshipsOpen in the map →12345678910←Enters from
The inside heel hook attacks the ACL and medial knee structures through internal rotation from the cross ashi garami position (the saddle or honey hole). The cross ashi configuration provides bilateral hip control — both the attacker’s legs wrap around the defender’s leg — which eliminates the primary escape tools available against the outside heel hook.
This is the most dangerous submission in no-gi grappling by two measures: injury severity and speed to structural damage. The window between the beginning of rotation and the structural damage threshold is smaller for the inside heel hook than for any other submission in the system. Practitioners who have not trained this in a controlled, experienced environment should not apply it at pace.
Understanding this submission begins with understanding the cross ashi position, the bilateral hip control it provides, and why that control is what makes this submission categorically different from the outside heel hook.
Elevated RiskInside Heel Hook is an elevated risk technique. The inside heel hook attacks the ACL and medial knee structures through internal rotation from the cross ashi position. The cross ashi configuration provides bilateral hip control, eliminating standard escape tools. The window between beginning to apply and structural damage threshold is the smallest of any submission in grappling. Serious injury can occur within a very small number of degrees of rotation — faster than any other heel hook.
If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.
The person applying the technique is responsible for releasing immediately.
Communicate before drilling. Know your partner's experience level with this position.