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Piriformis Syndrome

A condition in which the piriformis muscle deep in the buttock becomes rigid and compresses the sciatic nerve. Numbness and pain run from the buttock down the back of the leg.

Expert VerifiedHyo-seop KimChief Director

Piriformis Syndrome

Q. How is piriformis syndrome distinguished from herniated disc?

Piriformis: muscular trigger; disc: nerve root compression with specific dermatome.

📝 Detailed Answer

Distinguishing tests: ① piriformis: pain reproduced by hip rotation/sitting, no specific dermatome, ② herniated disc: pain along specific dermatome, positive straight leg raise, ③ MRI distinguishes definitively, ④ different treatments.

Expert Verified

Hyo-seop Kim

Chief Director

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