Two articles on PainSci cite Dibai-Filho 2015: 1. The Complete Guide to Trigger Points & Myofascial Pain 2. The Trigger Point Identity Crisis
PainSci commentary on Dibai-Filho 2015: ?This page is one of thousands in the PainScience.com bibliography. It is not a general article: it is focused on a single scientific paper, and it may provide only just enough context for the summary to make sense. Links to other papers and more general information are provided wherever possible.
Thermography is infrared scanning of the human body for signs of trouble. Do trigger points cause hot spots on the skin overlying them? Will they light up on a thermograph? A scientific review by the same authors looked at four studies, finding mixed results (see Dibai-Filho). The authors tested their own method to try to resolve the uncertainty.
Twenty-four adults with neck pain and a suspected active trigger point in the trapezius were assessed by two trained examiners each, twice in a week. Each examiner detected similar thermography results, suggesting that “the methods of infrared image analyses of myofascial trigger points in the upper trapezius muscle employed in the present study are suitable for clinical and research practices.”
The fact that they concluded that their own method was effective is promising if you’re an optimist, and bit fishy if you’re not. Replication is definitely needed before the method can be trusted.
~ Paul Ingraham
original abstract †Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
BACKGROUND: Infrared thermography is recognized as a viable method for evaluation of subjects with myofascial pain.
OBJECTIVE: The aim of the present study was to assess the intra- and inter-rater reliability of infrared image analysis of myofascial trigger points in the upper trapezius muscle.
METHOD: A reliability study was conducted with 24 volunteers of both genders (23 females) between 18 and 30 years of age (22.12 ± 2.54), all having cervical pain and presence of active myofascial trigger point in the upper trapezius muscle. Two trained examiners performed analysis of point, line, and area of the infrared images at two different periods with a 1-week interval. The intra-class correlation coefficient (ICC(2,1)) was used to assess the intra- and inter-rater reliability.
RESULTS: With regard to the intra-rater reliability, ICC values were between 0.591 and 0.993, with temperatures between 0.13 and 1.57 °C for values of standard error of measurement (SEM) and between 0.36 and 4.35 °C for the minimal detectable change (MDC). For the inter-rater reliability, ICC ranged from 0.615 to 0.918, with temperatures between 0.43 and 1.22 °C for the SEM and between 1.19 and 3.38 °C for the MDC.
CONCLUSION: The methods of infrared image analyses of myofascial trigger points in the upper trapezius muscle employed in the present study are suitable for clinical and research practices.
- Is Diagnosis for Pain Problems Reliable? — Reliability science shows that health professionals can’t agree on many popular theories about why you’re in pain
- “Evaluation of myofascial trigger points using infrared thermography: a critical review of the literature,” Almir Vieira Dibai-Filho and Rinaldo Roberto de Jesus Guirro, Journal of Manipulative & Physiological Therapeutics, 2015.
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- Photobiomodulation therapy is not better than placebo in patients with chronic nonspecific low back pain: a randomised placebo-controlled trial. Guimarães 2021 Pain.
- No effect of creatine monohydrate supplementation on inflammatory and cartilage degradation biomarkers in individuals with knee osteoarthritis. Cornish 2018 Nutr Res.
- The CANBACK trial: a randomised, controlled clinical trial of oral cannabidiol for people presenting to the emergency department with acute low back pain. Bebee 2021 Med J Aust.
- Relationships Between Sleep Quality and Pain-Related Factors for People with Chronic Low Back Pain: Tests of Reciprocal and Time of Day Effects. Gerhart 2017 Ann Behav Med.
- Modulation in the elastic properties of gastrocnemius muscle heads in individuals with plantar fasciitis and its relationship with pain. Zhou 2020 Sci Rep.