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

Piriformis Syndrome Clinical Trial

Official title:
Effect of Ultrasound-guided Piriformis Muscle Corticosteroid Injection Versus Extracorporeal Shock Wave Therapy for Piriformis Syndrome

Clinical Trial Summary

In this study, the investigators aim to compare the effect of extracorporeal shockwave therapy with ultrasound-guided piriformis coticosteroid injection in treatment of PS.

Clinical Trial Description

Piriformis syndrome (PS) is one of the common etiology of low back pain. The cause of PS is due to myofascial syndrome of piriformis muscle, leading to piriformis muscle spasm, string-like taut band, and trigger point. Consequently, it may compresses the sciatic nerve which arise from sciatic notch and passes under the piriformis muscle. Conservative treatment of PS includes therapeutic exercise, diathermy, and local steroid injection. Among them, as radiology techniques advance, ultrasound-guided piriformis injection becomes popular for diagnosis block and treatment. Nowadays, extracorporeal shockwave therapy has widely applied in musculoskeletal disease such as plantar fasciitis, tennis elbow, and calcific tendinitis of the shoulder. However, to the investigators best knowledge, there is no study comparing the therapeutic effect between local steroid injection and shockwave. In this study, the investigators aim to compare the effect of extracorporeal shockwave therapy with ultrasound-guided piriformis corticosteroid injection. This is a randomized controlled trial. 70 participants will be randomly divided into shockwave group and injection group. The participant in the shockwave group will receive one time extracorporeal shockwave therapy, and injection group will receive one time ultrasound-guided piriformis muscle corticosteroid injection. After the intervention, participant in both groups will receive home-based stretch exercise. Evaluation will be performed at baseline, 1 week, and 5 weeks after intervention. Outcome measures include the pain visual analog scale (VAS), hip range of motion, change of pressure pain threshold, and Oswestry Disability Index (ODI). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04684537
Study type Interventional
Source Shin Kong Wu Ho-Su Memorial Hospital
Contact
Status Completed
Phase N/A
Start date January 1, 2021
Completion date December 31, 2022
View Details
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