Fulcrum Placement

The armbar's fulcrum is the hip line pressing against the back of the elbow. Pulling the arm so the elbow sits directly on the hip crease — not above or below — creates the tightest lever and the fastest tap.

The kneebar fulcrum is the hip bone pressing against the back of the knee joint. Adjusting hip placement by even a centimetre changes the angle of hyperextension and determines whether the lock finishes or slips.

The guillotine's fulcrum is the wrist bone under the chin or throat. Positioning the wrist on the trachea creates an air choke; shifting it to the side of the neck compresses the carotid for a blood choke.

The straight ankle lock places the wrist bone as a fulcrum against the Achilles tendon. Too high targets the calf muscle and fails; too low slides off the heel. Precise placement on the tendon makes the difference.

The americana's fulcrum is the point where the wrist is pinned to the mat. The closer the wrist stays to the opponent's head during rotation, the shorter the lever arm and the more force reaches the shoulder.

The omoplata's fulcrum is the hip crease pressing against the back of the opponent's shoulder. Sitting up tall and forward shifts the fulcrum deeper into the joint, increasing rotational force on the shoulder.

The triangle's fulcrum is the back of the knee pressing against one side of the neck while the shin compresses the other. Cutting the angle positions this fulcrum directly on the carotid arteries.

The toe hold fulcrum is the grip hand rotating the foot against the ankle joint. Gripping closer to the toes increases the lever arm and multiplies rotational force on the ankle and knee.

The bicep slicer wedges the forearm against the crook of the opponent's elbow as a fulcrum. Closing the arm forcefully compresses the bicep tendon against bone — fulcrum depth determines pain and damage speed.

The kimura fulcrum is the grip on the wrist while the elbow is controlled against your body. Keeping the elbow pinned to your torso shortens the lever and concentrates all rotational force through the shoulder joint.