This condition may occur from the irritation of the lower back lumbar or sacral nerves that exit out of the spine. Arthritic spurs, a disc protrusion a leg length discrepancy or a foot that pronates may create this problem. Symptoms may include sharp shooting pain into or down either leg with numbness, tingling, burning, muscle spasms. Sometimes deep, very achy muscles in the leg or buttocks can masquerade as a pulled muscle, but is really an injury or irritation to the nerve root . Physical therapy, Chiropractic and massage therapy all work very well, Leg length imbalances and faulty foot mechanics need to be addressed as well. When conservative care fails to relieve the symptoms fairly quickly, a MRI can diagnose damage to the nerve or bony tissues.