Sit on the floor, couch or bed, using your legs stretched straight out in front of you. Put a rolled-up towel below 1 knee. Thrust down to the towel as if straightening your knee. Phase on to The underside step of stairs with your right foot. Bring up your left https://www.theorthopaedicandpainpractice.com/treatment-for-swollen-arthritic-knee/