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Journal of Korean Neurosurgical Society 2001;30(6): 749-754.
Intradiscal Electrothermotherapy(IDET) in Patients with Chronic Discogenic Low Back Pain; Preliminary Report.
Kyung Sik Ryu, Chun Kun Park
Department of Neurosugery, Kang Nam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
The IDET(Intradiscal electrothermal therapy) appears as a new therapeutic modality for intractable discogenic back pain. We carried out a prospective study to analyze and evaluate the therapeutic effects of IDET.
AND RESULTS: During a six month period, we performed IDET in 39 patients with chronic low back pain using RITA Model 30 Electrosurgical device. The patients included 21 men and 18 women. The mean patient age was 50.2 years(range 21-73 years). All patients underwent preoperative plain radiography and MRI for excluding non-discogenic back pain. We conducted discography-CT to reveal painful discs in all patients. During the study, we measured intradiscal pressure subjectively. The area of annular tear, which identified with post-discography CT scan, was coagulated in 90degreesC of temperature for 15 minutes. Of the 17 patients who were followed up more than three months after surgery, the 10 patients(58.8%) experienced clinical improvement. Three patients had high intradiscal pressure on discography, other three patients had loss of disc height more than 30% of normal on plain radiography, and one patient suffered from postoperative epidural abscess. All of these patients were included in the remaining no improvement group(41.2%).
The IDET procedure could be an alternative modality for discogenic back pain. It appears that a patient who has low intradiscal pressure on discography and intact disc height on plain radiography is considered a good candidate for IDET.
Key Words: IDET; Chronic low back pain; Discogenic back pain; Discography
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