The piriformis muscle is a muscle that connects your thigh bone at the hip to the tailbone and lower back. Piriformis Sydrome occur when this muscle tightens or spasms.
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Piriformis syndromeJust a pain in the butt.
Piriformis Syndrome: A Real Pain In The Butt
Piriformis Syndrome: A Real Pain in the Butt
Piriformis syndrome: Symptoms, diagnosis, and treatment
Piriformis Syndrome Exercises (videos): Helping a Pain in the Butt