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Ultrasound Guided Diagnostic Lumbar Medial Branch Blocks

NCT00909272 · Status: WITHDRAWN · Type: OBSERVATIONAL

Last updated 2015-04-08

No results posted yet for this study

Summary

Can an ultrasound machine be used to perform a diagnostic lumbar medial branch block?

Conditions

Interventions

PROCEDURE

Lumbar medial branch block

The ultrasound probe will be placed perpendicular to skin along the midline of lumbar spinous process on longitudinal view first to count the lumbar level. The midpoint of each lumbar level will be marked on the longitudinal view and then will be rotated ninety degrees counter clockwise to axial view to locate the facet joint and the transverse process of lumbar spine. A #22 gauge 10cm long Quincke spinal needle will be inserted to the target area using in plane approach on the axial view. Then the probe will be rotated ninety degrees clockwise to longitudinal view to ensure needle tip is placed on the cephalad aspect of the transverse process. It will then be immediately confirmed by C-arm fluoroscopy on oblique view.

PROCEDURE

Ultrasound landmarks

The target point is the superior medial aspect of transverse process of lumbar spine from L3 to S1. A #22 gauge 10cm long Quincke spinal needle will be use for needle placement. Needle placement will be visualized with ultrasound. Practice on cadavers with 3 different operators and see if results are reproducible. Verify with fluoroscopy.

Sponsors & Collaborators

Principal Investigators

  • Joseph Park, MD · Hamilton Health Sciences Corporation

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-07-31
Primary Completion
2015-12-31
Completion
2015-12-31

Countries

  • Canada

Study Locations

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Diseases
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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00909272 on ClinicalTrials.gov