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Spinal Symptoms:

Where Does That Pain Come From?

Chapter 7
Sciatica: Disk vs Piriformis
Physicians use physical examination maneuvers to help seek out the cause of sciatica. When a straight leg raise reproduces the pain, a herniated disk is often the cause. If the leg raise has no effect, the crossed leg test shown below can be used to stretch the piriformis muscle to test for a pelvic location of the sciatic nerve entrapment.