Effect of Ultrasound-guided Piriformis Muscle Corticosteroid Injection Versus Extracorporeal Shock Wave Therapy for Piriformis Syndrome: a Randomized Control Trial

The therapy will be performed with the focused piezoelectric shockwave (F10G4 Richard Wolf GmbH, Germany). The patient will be kept in the hip flexion, adduction and internal rotation position. After sonography-guided localization of the affected muscle and identification of the trigger point by the participant, ultrasound gel is applied to the skin and the applicator couple is placed with an impulse energy flux density of 0.456-0.882 mJ/mm2 for 3500 impulses.

all the participants will receive ultrasound-guided piriformis injection with 10 mg triamcinolone and 1 c.c. 1% lidocaine for one time.