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:::::Pain Physician:::::
 
Past Issue - March 2013 - Vol 16 Issue 2 Index | Previous | Next | 
2013;16;135-144. The Influence of Pain Sensitivity on the Symptom Severity in Patients with Lumbar Spinal Stenosis
Retrospective Review
Ho-Joong Kim, MD, Bo-Gun Suh, MD, Dong-Bong Lee, MD, Gun-Woo Lee, MD, Dong-Whan Kim, MD, Kyoung-Tak Kang, MS, Bong-Soon Chang, MD, Choon-Ki Lee, MD, and Jin S. Yeom, MD
 

BACKGROUND: The symptom severity of back pain/leg pain is not correlated with the severity of degenerative changes and canal stenosis in lumbar stenosis. Considering the individual pain sensitivity might play an important role in pain perception, this discordance between the radiologic findings and clinical symptoms in degenerative lumbar stenosis might originate from the individual difference of pain sensitivity for back pain and/or leg pain.

OBJECTIVE: To determine the relationship among the clinical symptoms, radiologic findings, and the individual pain sensitivity in the patients with degenerative lumbar spinal stenosis.

STUDY DESIGN: Retrospective analysis of prospectively collected data.

SETTING: A spine center in the department of orthopedic surgery.

METHODS: In 94 patients who had chronic back pain and/or leg pain caused by degenerative lumbar spinal stenosis, a medical history, a physical examination, and completion of a series of questionnaires, including pain sensitivity questionnaire (PSQ) [total PSQ and PSQ-minor], Oswestry Disability Index (ODI), Visual Analog Pain Scale (VAS) for back pain, and Short Form-36 (SF-36) were recorded on the first visit. Radiologic analysis was performed using the MRI findings. The grading of canal stenosis was based on the method by Schizas, and the degree of disc degeneration was graded from T2-weighted images with the Pfirrmann classification. The correlations among variables were statistically analyzed.

RESULTS: Total PSQ and PSQ-minor were not dependent on the grade of canal stenosis after gender adjustment. VAS for leg pain and back pain was highly associated with the total PSQ and the PSQ-minor. Total PSQ and PSQ-minor were also significantly associated with ODI. Among SF-36 scales, the PSQ minor had significant correlations with SF-36 such as bodily pain (BP), Role-emotional (RE), and Mental Component Summary (MCS) after control of confounding variables such as body mass index (BMI), age, and the grade of canal stenosis/disc degeneration. Total PSQ was significantly associated with the SF-36 RP, BP, and RE. Furthermore, after adjustment for gender and pain sensitivity, there was no significant association between the grade of canal stenosis and VAS for back pain/leg pain and ODI, and no correlation was found between the grade of disc degeneration and VAS for back pain/leg pain and ODI, either.

LIMITATIONS: The multiple lesions of canal stenosis and/or disc degeneration and the grade of facet degeneration were not considered as a variable.

CONCLUSION: The current study suggests that the pain sensitivity could be a determining factor for symptom severity in the degenerative spinal disease

 

   
 
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Authors
Ho-Joong Kim
Bo-Gun Suh
Dong-Bong Lee
Gun-Woo Lee
Dong-Whan Kim
Kyoung-Tak Kang
Bong-Soon Chang
Choon-Ki Lee
Jin S. Yeom


Keywords
Pain sensitivity
pain sensitivity questionnaire
lumbar spinal stenosis
visual analog pain scale
Oswestry disability index
Short Form-36