Standing ankle pronation/supination BA (Ankle pronation/supination buoyancy assisted, foot on kickboard, standing)

Stand up straight with a wall to your side.
Hold onto the wall with your nearest hand, you will be exercising your opposite knee.
Place a small kickboard under the sole of your affected foot and lift your knee to 90 degrees.
Keeping your heel below your knee, slowly roll your foot onto the inside then the outside edge.
Try and keep control of the kickboard.