Then lay your partner on their stomach and verify at once that the bondage restraining the body does not cause them a problem in this position.

Take the second rope and fold it in 2. Bend the leg back and make a lap of the thigh and the bottom of the shin, then pass the rope through the middle fold.

Attention: you have to pass the rope across the thigh up at a high level so that the heel is brought back as close as possible to the buttock (which will depend on the flexibility of your partner).