Causes of Piriformis Syndrome:
Pain can also be caused by prolonged external rotation of the hip so that the piriformis muscle is shortened. If the sciatic nerve is compressed for an long time there may be aching in the leg and pain in the low back. Shortening of the muscle and compression of the nerve is the most common cause of piriformis Syndrome, but overuse of the gluts and other muscles in the hip can also cause muscle spasms of the piriformis. Other factors in this syndrome include poor body mechanics and posture, gait problems.
Right cxercise of the piriformis syndrome:
lay on your back, bend your knees and cross your right leg over your left so your right ankle rests on your left knee in a figure four position. Bring your left leg towards your chest by bending at the hip. Reach through and grab your left thigh to help pull things towards your chest.