Lateral Step-Up

Stand to the side of a step, or the bottom of a staircase.

Plant your affected foot on the step while keeping the good leg on the floor.

Then, step your good foot up to level with the affected foot and as you do this, use your affected leg to raise the other foot. For this, you'll have to bring your knee in line with the toes of your foot and hip above your knee as much as you can.

You can also take your toes off the ground and then step up. Be wary just to raise and level the foot of the unaffected side rather than putting it exactly on the step with the affected leg.

Then maintaining the same position of your affected leg — i.e., the knee in line with the toes of your foot and hip above your knee as much, step down with the unaffected foot.

Continue alternating for a complete set. Aim for at least 8 to 12 reps per side daily.