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Multifidus Muscle Twitch on the Prognosis of Lumbar Medial Branch RF

NCT02580383 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 68

Last updated 2016-06-23

No results posted yet for this study

Summary

The investigators collected data and chart from the patients who were diagnosed facet joint syndrome and underwent lumbar RF medial branch neurotomy between January 2009 and June 2014.

RF was performed using sensory stimulation and multifidus twitching to confirm the position of RF needle. The patients wil be grouped according to the adequacy of RF needle position while performing RF medial branch neurotomy ('complete' when all needles were placed adequately, 'partial' when one of the needles for a facet joint medial branch was placed inadequately, 'none' when there were both needles positioned inadequately for a facet joint) The relationship between the long term effect of RF neurotomy (longer than 6 months) and the groups will be analyzed.

Conditions

  • Facet Joint Syndrome

Interventions

PROCEDURE

Radiofrequency neurotomy of lumbar medial branch

In above L5, The RF needle was placed to contact with bone as close as possible to the course of the target nerve in parallel. For L5 dorsal rami ablation, the needle was positioned in the groove between the S1 articular process and sacral ala. At each level, the electrodes were adjusted to optimize sensory stimulation at a frequency of 50 Hz and maximize multifidus contraction at 2 Hz. A 75 second 80°C lesion was made using an RF generator.

Sponsors & Collaborators

  • Severance Hospital

    lead OTHER

Principal Investigators

  • Yoon-Woo Lee, MD, PhD · Department of Anesthesiology and Pain medicine, Gangnam Severance Hospital, Seoul, Korea

Eligibility

Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-09-30
Primary Completion
2016-06-30
Completion
2016-06-30

Countries

  • South Korea

Study Locations

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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 NCT02580383 on ClinicalTrials.gov