What is straight-leg raises to the front?

Straight-leg raises to the front

1. Lie on your back with your good knee bent so that your foot rests flat on the floor. Your injured leg should be straight. Make sure that your low back has a normal curve. You should be able to slip your flat hand in between the floor and the small of your back, with your palm touching the floor and your back touching the back of your hand.
2. Tighten the thigh muscles in the injured leg by pressing the back of your knee flat down to the floor. Hold your knee straight.
3. Keeping the thigh muscles tight, lift your injured leg up so that your heel is about 12 inches off the floor. Hold for about 6 seconds, and then lower slowly.
4. Do 8 to 12 repetitions, 3 times a day.