title: Piriformis syndrome: pathogenesis, diagnosis, and treatment.
mesh_terms: D006801:Humans; D008161:Lumbosacral Region; D009132:Muscles / Q000294:innervation*; D009209:Myofascial Pain Syndromes / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D009443:Neuritis / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy; D012584:Sciatic Nerve