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Clinical Trial Summary

In spite that variable techniques for lumbar MBRF exists, the tunnel vision technique is widely recommended for exact radiofrequency needle placement. However, this method uses the concept of a steep caudocephalad axial tilt of the fluoroscopy beam, which result in unusual appearance of vertebral structures and a long distance from skin to the target site. In our institution, therefore, the investigators have used a modified method that is easy and safe to place RF needle parallel to the lumbar medial branch in oblique fluoroscopic view.

Accordingly, our objectives were to evaluate our modified technique for lumbar MBRF, comparing with the tunnel vision technique, and additionally to assess complications with respect to these two techniques.


Clinical Trial Description

The zygapophysial (facet) joint pain has been a challenging condition for pain specialists since the 20th century. According to the previous reports, degenerative changes of facet joint account for 10% - 15% of the cases with chronic low back pain. However, it is a major source of frustration that there is no definitive standard to document a clinical diagnosis and few validated treatment about lumbar facet joint pain.

Although it has been a subject of debate how best to select patients, radiofrequency (RF) neurotomy is frequently performed procedure for patients with lumbar facet generated pain. Lumbar medial branch radiofrequency (MBRF) is assumed to be effective and safe treatment for lumbar facet joint pain with 1.0% rate of minor complications per lesion site. The rationale and efficacy of lumbar MBRF would depend on the use of meticulous radiofrequency (RF) needle placement with stringent patient selection.

In spite that variable techniques for lumbar MBRF exists, the tunnel vision technique is widely recommended for exact RF needle placement. However, this method uses the concept of a steep caudocephalad axial tilt of the fluoroscopy beam, which result in unusual appearance of vertebral structures and a long distance from skin to the target site. In our institution, therefore, the investigators have used a modified method that is easy and safe to place RF needle parallel to the lumbar medial branch in oblique fluoroscopic view.

Accordingly, our objectives were to evaluate our modified technique for lumbar MBRF, comparing with the tunnel vision technique, and additionally to assess complications with respect to these two techniques. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT01300715
Study type Interventional
Source Seoul National University Bundang Hospital
Contact Jee Youn Moon, M.D.
Phone 82-10-5299-2036
Email snu23802@snu.ac.kr
Status Recruiting
Phase N/A
Start date November 2010

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