Ultrasound-guided L5 Dorsal Ramus Block

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-01-12

Study Completion Date

2019-04-30

Brief Summary

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This study will examine the accuracy of an ultrasound-guided L5 dorsal ramus block technique.

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Detailed Description

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The lumbar facet joints have been implicated as a causal factor in 15 to 40% of patients suffering from chronic low back pain. Because physical examination and medical imaging have limited value in determining the source of pain, diagnostic blocks play an important role in the management of this common condition. Blocks of the L5 dorsal ramus (DR) are used to diagnosed pain originating from the L5-S1 facet joint, which is one of the most commonly implicated levels in patients with low back pain. Fluoroscopic guidance, which uses x-rays, is currently the standard imaging modality used to perform this block. Recently, ultrasound guidance has seen increasing use because of its greater accessibility and lack of ionizing radiation. Although USG has been shown to provide a high level of accuracy at other levels, the greater anatomical complexity found at the L5-S1 has hindered the development of a satisfactory L5 DR block technique. In this study the investigators will use fluoroscopic control to examine the accuracy of a novel ultrasound-guided approach to this block.

Conditions

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Pain, Back

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Primary group

Ultrasound-Guided L5 Dorsal ramus block

L5 Dorsal ramus block

Intervention Type PROCEDURE

Ultrasound-guided L5 dorsal ramus block

Interventions

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L5 Dorsal ramus block

Ultrasound-guided L5 dorsal ramus block

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

-Any consenting patient over 18 years of age with axial low back pain who requires a diagnostic L5 dorsal ramus block.

Exclusion Criteria

* Inability to consent
* Iodine or lidocaine allergy,
* Pregnancy,
* Coagulopathy (as defined by an INR over 1.4, platelets under 100,000, or a documented bleeding disorder)
* Inability to visualize lumbosacral anatomy during an ultrasound pre- scan

Eligible Sex

ALL

Accepts Healthy Volunteers

No