
pull ankle toward body while knee is supported in slight flexion by towel or pillow
Lie on back or in long sitting position, place a towel roll or pillow under the knee making an angle of 15° -30°. Pull the ankle towards the body and move away. Repeat. Note - Place the pillow under knee of an exercising leg.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.