title: The effect of radiofrequency neurotomy on chronic low back pain.
abstract: METHODS
  A prospective study.
  
  
  OBJECTIVE
  To determine the success rate and duration of relief of radiofrequency neurotomy for lumbar facet joint pain.
  
  
  BACKGROUND
  There is a lack of effective treatment for chronic low back pain. Radiofrequency denervation appears to be an emerging technology, with substantial variations in use.
  
  
  METHODS
  Fifty-eight patients underwent radiofrequent neurotomy on the posterior primary ramus for chronic low back pain. All patients with low back pain of more than 3 months duration, with or without non-radicular radiation to the buttock and hip, were included in the study. From October 2005 to December 2006, eligible patients underwent a standardized diagnostic work-up, which included the use of a visual analog scale (VAS), physical examination, review of imaging studies, and diagnostic blockades. Pain relief was assessed on the third day, and at 3 months and 6 months post-treatment, using the visual analog scale.
  
  
  RESULTS
  There were 44 women and 14 men included in the study. The mean age was 57.7 years (range, 20~80 years). Radiofrequency neurotomy denervated three segments and a bilateral lesion in all patients. The visual analogue scale (VAS) scores on the third day (mean VAS score: 1.48) and 3 months (mean VAS score: 1.79) after treatment decreased significantly when compared with the pre-treatment scores (mean VAS score: 6.56). However, the final values of the VAS scores after 6 months were slightly increased as compared to the VAS scores measured at the beginning of the study (mean VAS score: 2.91). No cases of infection, new motor deficits, or new sensory deficits were identified.
  
  
  CONCLUSIONS
  We suggest that radiofrequency neurotomy offers an effective palliative management of lumbar facet pain. However, there is limited evidence that radiofrequency neurotomy offers short-term relief for chronic low back pain. Further high-quality randomized controlled trials are needed with larger patient numbers and more data on the long-term effects, for which current evidence is inconclusive.
authors.affiliation: Department of Orthopedic Surgery, St. Paul's Hospital Catholic University, Seoul, Korea.
authors.forename: Sung Jin
authors.initials: SJ
authors.lastname: Park
authors.forename: Cheol
authors.initials: C
authors.lastname: Ji
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Kwon
authors.forename: Kee-Yong
authors.initials: KY
authors.lastname: Ha
references.citation: Pain Physician. 2002 Oct;5(4):405-18
references.pmid: 16886020
references.citation: Spine (Phila Pa 1976). 2004 Nov 1;29(21):2471-3
references.pmid: 15507813
references.citation: Spine (Phila Pa 1976). 1999 Sep 15;24(18):1937-42
references.pmid: 10515020
references.citation: Spine (Phila Pa 1976). 1990 Jan;15(1):36-40
references.pmid: 2139239
references.citation: Spine (Phila Pa 1976). 2001 Jul 1;26(13):1411-6; discussion 1417
references.pmid: 11458140
references.citation: Spine (Phila Pa 1976). 1994 May 15;19(10):1132-7
references.pmid: 8059268
references.citation: Spine (Phila Pa 1976). 2004 Jun 15;29(12):1352-4
references.pmid: 15187637
references.citation: Pain. 1994 Apr;57(1):77-83
references.pmid: 8065800
references.citation: Pain. 1994 Aug;58(2):195-200
references.pmid: 7816487
references.citation: Spine (Phila Pa 1976). 1998 Sep 1;23(17):1847-52
references.pmid: 9762741
references.citation: Spine (Phila Pa 1976). 2000 May 15;25(10):1270-7
references.pmid: 10806505
references.citation: Spine (Phila Pa 1976). 1997 Apr 15;22(8):895-902
references.pmid: 9127924
references.citation: Spine (Phila Pa 1976). 1995 Sep 15;20(18):2040-7
references.pmid: 8578383