1. Stand facing a wall with your hands on the wall at about chest level.
2. Keeping the knee of your affected leg straight, kick that leg straight back behind you.
3. Slowly lower your leg back to the starting position.
4. Repeat 8 to 12 times.
5. It's a good idea to repeat these steps with your other leg.

When you can do this exercise with ease and no pain, add some resistance. To do this:

• Tie the ends of an exercise band together to form a loop. Attach one end of the loop to a secure object or shut a door on it to hold it in place. (Or you can have someone hold one end of the loop to provide resistance.)
• Loop the other end of the exercise band around the lower part of your affected leg.
• Repeat steps 1 through 5, slowly pulling back on the exercise band with your leg.