Document Detail

An evaluation of the sensitivity and specificity of medical thermography for the documentation of myofascial trigger points.
MedLine Citation:
PMID:  1589239     Owner:  NLM     Status:  MEDLINE    
This investigation evaluated the diagnostic value of medical thermology for the documentation of myofascial trigger points. Previous investigators have suggested that circumscribed 'hot spots' reflect the thermal activity of trigger points. A total of 365 patients participated in the four separate experiments. Upper back trigger points were isolated via palpation. A separate thermographic examination, specific to that experiment, was conducted by a technologist who was blind to the presence or absence of trigger points. The first experiment examined the Swerdlow-Dieter protocol. Fifty percent of the subjects with trigger points demonstrated hot spots. Over 60% of patients without trigger points exhibited hot spots. Chi-square analysis determined that there was no significant difference between these two groups. The majority of hot spots were unrelated to trigger point location. The second experiment evaluated the protocol suggested by Fisher. Hot spots were evident in the majority of subjects, regardless of whether they possessed trigger points. The third experiment investigated hot spot persistence by adapting the Weinstein-Weinstein alcohol spray protocol. Chi-square analysis found no significant difference between the effect which spray had on the hot spots of patients with or without trigger points. Following a post-spray machine adjustment, the majority of pre-spray hot spots could be reproduced. The final experiment used a pressure threshold meter (PTM) to evaluate the number of kilograms pressure a patient's hot spot could comfortably sustain in comparison to the opposite location on the back. Using the t test, no significant difference was found between the kilograms pressure withstood by hot spot and non-hot spot regions.(ABSTRACT TRUNCATED AT 250 WORDS)
B Swerdlow; J N Dieter
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pain     Volume:  48     ISSN:  0304-3959     ISO Abbreviation:  Pain     Publication Date:  1992 Feb 
Date Detail:
Created Date:  1992-06-25     Completed Date:  1992-06-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7508686     Medline TA:  Pain     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  205-13     Citation Subset:  IM    
University of Central Florida, Headache Management Center, Winter Park, FL 32792.
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MeSH Terms
Chi-Square Distribution
Myofascial Pain Syndromes / diagnosis*,  physiopathology
Sensitivity and Specificity
Comment In:
Pain. 1992 Oct;51(1):125-7   [PMID:  1454399 ]

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