Standing alternate hip flexion will strengthen your hip flexor muscles, making it easier for you to lift your leg during everyday activities, like getting into and out of a car.
Sit down on a chair, and slide your feet through a loop resistance band so that the band is around both ankles. You will probably want to start with a light to moderate resistance band for this exercise.
Stand up, and hold onto the chair for support, keeping a tall posture. Your feet should be about hip width apart.
You may also perform this exercise seated on a chair if you have poor balance and feel unsteady on your feet.
Slowly lift one knee up toward the ceiling like you are marching. Lower your leg back down to the starting position. Keep a tall posture. Repeat on the other side.