This exercise is Prone Hip Extension and its aim is to strengthen the muscles on the back of your hip.

Start by laying on the floor on your belly. Have your knee bent to 90 degrees, and aim to lift the thigh of that leg off the floor by a couple of inches. You should feel the muscles in the back of your hip working, but it is not uncommon to feel it in the lower back at times as well. You can also complete this exercise with your leg straight, but the long lever may be too difficult initially.

If you find this exercise too easy you may want to make it more challenging by adding some ankle weights to your leg. If you find it too difficult you may find it easier by putting a pillow underneath your hips when you lay on the floor.

Aim to complete the reps and sets suggested in your rehab programme.