Intravascular Injection Incidences During Lumbar Medial Branch Block

Study Overview
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Brief Summary
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The purpose of this study is to compare using oblique fluoroscopic angle has any advantage in reducing the incidence of vascular punture and technical easiness during lumbar medial branch block

Detailed Description
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In previous report, the use of oblique fluoroscopic angle during S1 transforaminal injection demonstrated technical easiness and reduced intravascular injection incidences. For the procedure lumbar medial branch block, both anteroposterior and oblique fluoroscopic angle are possible. Usually, which approach method to use is determined according to the physician's preferences. The final target for lumbar medial branch block is the junction betweeen superior articular process and transverse process. This target can be easily confirmed under the scotty dog appearance. If we use oblique fluoroscopic angle, this approach (30 degree) can make scotty dog appearance more visible so that physician can identify bony landmark more easily for lumbar medial branch block. For beginners, oblique fluoroscopic approach seems to provide more advantages in identifying bony landmark. However, it is uncertain whether this approach can provide technicaL easiness and reduce the intravascualr injection incidences.

Official Title
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Comparison of Intravascular Injection Incidences Durig Lumbar Medial Branch Block Using Anteroposterior or Oblique Angle

Conditions
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Intravascular Injection

Intervention / Treatment
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* Procedure: lumbar medial branch block


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: facet joint arthropathy Exclusion Criteria: allergy to local anesthetics or contrast medium pregnancy spine deformity neurologic abnormality

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 79 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Oblique group<br>medial branch block with oblique group | Procedure: lumbar medial branch block<br>* lumbar medial branch block<br>|
| Placebo Comparator: Anteroposterior group<br>medial branch block with anteroposterior group | Procedure: lumbar medial branch block<br>* lumbar medial branch block<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| incidence of intravasuclar injection | incidence of intravasuclar injection | 1 minute after finishing lumbar medial branch block | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| time required to complete lumbar medial branch block | time required to complete lumbar medial branch block | 1 second after finishing lumbar medial branch block | 
| radiation amount to complete lumbar medial branch block | radiation amount to complete lumbar medial branch block | 1 second after finishing lumbar medial branch block | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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intravascular injection