Relationship between paravertebral muscle twitching and long-term effects of radiofrequency medial branch neurotomy
The Korean Journal of Pain
;
: 296-303, 2017.
Article
in English
| WPRIM
| ID: wpr-207160
ABSTRACT
BACKGROUND:
To achieve a prolonged therapeutic effect in patients with lumbar facet joint syndrome, radiofrequency medial branch neurotomy (RF-MB) is commonly performed. The purpose of this study was to evaluate the prognostic value of paravertebral muscle twitching when performing RF-MB in patients with lumbar facet joint syndrome.METHODS:
We collected and analyzed data from 68 patients with confirmed facet joint syndrome. Sensory stimulation was performed at 50 Hz with a 0.5 V cut-off value. Patients were divided into 3 groups according to the twitching of the paravertebral muscle during 2 Hz motor stimulation ‘Complete’, when twitching was observed at all needles; ‘Partial’, when twitching was present at 1 or 2 needles; and ‘None’, when no twitching was observed. The relationship between the long-term effects of RF-MB and paravertebral muscle twitching was analyzed.RESULTS:
The mean effect duration of RF-MB was 4.6, 5.8, and 7.0 months in the None, Partial, and Complete groups, respectively (P = 0.47). Although the mean effect duration of RF-MB did not increase significantly in proportion to the paravertebral muscle twitching, the Complete group had prolonged effect duration (> 6 months) than the None group in subgroup analysis. (P = 0.03).CONCLUSIONS:
Paravertebral muscle twitching while performing lumbar RF-MB may be a reliable predictor of long-term efficacy when sensory provocation under 0.5 V is achieved. However, further investigation may be necessary for clarifying its clinical significance.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Prognosis
/
Low Back Pain
/
Catheter Ablation
/
Zygapophyseal Joint
/
Fasciculation
/
Ablation Techniques
/
Needles
Type of study:
Prognostic study
Limits:
Humans
Language:
English
Journal:
The Korean Journal of Pain
Year:
2017
Type:
Article
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