Ultrasound-Guided Interfascial Hydrodissection for Gluteal Myofascial Pain in Piriformis Syndrome: A Prospective Study

Condition(s) studied

Investigational drug(s) / intervention(s)

Ultrasound-Guided Interfascial Hydrodissection: Ultrasound-guided interfascial hydrodissection is performed in the interfascial plane between the gluteus maximus and piriformis muscles.

Ultrasound-Guided Gluteus Maximus Dry Needling: Ultrasound-guided dry needling is performed on the gluteus maximus muscle without fluid administration.

Study summary

This randomized, double-blind prospective trial investigates whether ultrasound-guided interfascial hydrodissection using 10% dextrose is more effective than dry needling in treating gluteal myofascial pain coexisting with piriformis syndrome. Following diagnostic piriformis injection response, eligible patients will be randomized into two treatment arms and followed at 1 hour, 1 week, 1 month, and 3 months. The primary hypothesis is that interfascial hydrodissection will provide superior long-term analgesic outcomes due to fascial separation, neuromodulation, and nociceptor suppression.

Eligibility

Primary outcome measure(s)

• Pain Intensity Assessed by Numeric Rating Scale — 3 months after the intervention
  Pain intensity is assessed using the Numeric Rating Scale (NRS, 0-10) for pain at rest, during activity, at night, while standing, sitting, lying down, and for overall pain.

Trial sites (1)

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