Clinical Research Directory
Browse clinical research sites, groups, and studies.
Proximal Versus Distal Superior Cluneal Nerve Block in Entrapment Neuropathy
Sponsor: Gaziosmanpasa Research and Education Hospital
Summary
Superior cluneal nerve (SCN) entrapment is an underdiagnosed cause of chronic low back and gluteal pain. Although diagnostic nerve block is considered the gold standard for confirming SCN entrapment, there is no consensus regarding the optimal injection approach. This prospective observational study aims to compare the clinical effectiveness of proximal and distal ultrasound-guided SCN block techniques in patients diagnosed with SCN entrapment. Pain intensity and functional outcomes will be evaluated over the follow-up period to assess differences between the two approaches.
Official title: Proximal Versus Distal Superior Cluneal Nerve Block in Superior Cluneal Nerve Entrapment: A Prospective, Randomized, Single-Blind Trial
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
OBSERVATIONAL
Enrollment
54
Start Date
2025-12-12
Completion Date
2026-07-01
Last Updated
2026-01-28
Healthy Volunteers
No
Conditions
Interventions
Ultrasound-guided distal superior cluneal nerve injection
The ultrasound probe will be placed over the posterior superior iliac crest to visualize the fibro-osseous tunnel where the superior cluneal nerve passes. Using an in-plane approach, the needle will be advanced toward the target area, and the injection will be administered at the fascial exit point of the nerve. A total injectate volume of 5 cc (2 cc bupivacaine, 2 cc dexamethasone, and 1 cc normal saline) will be administered. All procedures will be performed in the prone position under standard aseptic conditions.
Ultrasound-guided proximal superior cluneal nerve injection
Patients randomized to the proximal injection group will undergo ultrasound-guided injection above the iliac crest level. The target will be the plane beneath the posterior layer of the thoracolumbar fascia. Using an in-plane approach, the injectate will be delivered into the interfascial plane. A total injectate volume of 5 cc (2 cc bupivacaine, 2 cc dexamethasone, and 1 cc normal saline) will be administered under ultrasound guidance. Patient positioning and aseptic conditions will be identical to those used in the distal perineural injection group.
Locations (1)
Health Sciences University Gaziosmanpaşa Physical Medicine and Rehabilitation Training and Research Hospita
Istanbul, Turkey (Türkiye)