Start by standing in front of a step. One leg is placed on the step for support. A book is placed under the ball of the foot of the affected leg. The heel is resting on the floor and an exercise band placed behind the knee and attached ahead of you beyond the steps. The band should be attached securely with no slack.
Shift most of your weight onto the bottom leg and keep the knee straight. Rise onto your toes. Then lower the heel back down.
