PainSci summary of Reitinger 1996?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 at the bottom of the page, as often as possible. ★★★☆☆?3-star ratings are for typical studies with no more (or less) than the usual common problems. Ratings are a highly subjective opinion, and subject to revision at any time. If you think this paper has been incorrectly rated, please let me know.
In the first study of its kind in humans, Reitinger et al. perform biopsies of still-palpable nodules (presumed to be trigger points) in the gluteus medius muscle in fresh cadavers — an unusual and difficult thing to accomplish. Rigor mortis would not have set in to any significant degree in fresh cadavers.
Microscopic cross-sections of the tissue showed enlarged and darkly-staining muscle fibers — swollen fibers with higher oxidative capacity (more mitochondria, basically) — compared to elsewhere in the muscle. Their diameters were probably larger because they were contracted: electron microscopy showed maximally contracted sarcomeres, indicated by wide A-bands, absent I-bands, and close Z-bands.
These two articles on PainScience.com cite Reitinger 1996 as a source:
- PS Trigger Points & Myofascial Pain Syndrome — A guide to the unfinished science of muscle pain, with reviews of every theory and self-treatment and therapy option
- PS The Trigger Point Identity Crisis — The biological evidence that a trigger point is a lesion in muscle tissue
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:
- A Bayesian model-averaged meta-analysis of the power pose effect with informed and default priors: the case of felt power. Gronau 2017 Comprehensive Results in Social Psychology.
- The neck and headaches. Bogduk 2014 Neurol Clin.
- Agreement of self-reported items and clinically assessed nerve root involvement (or sciatica) in a primary care setting. Konstantinou 2012 Eur Spine J.
- Effect of NSAIDs on Recovery From Acute Skeletal Muscle Injury: A Systematic Review and Meta-analysis. Morelli 2017 Am J Sports Med.
- Association of Spinal Manipulative Therapy With Clinical Benefit and Harm for Acute Low Back Pain: Systematic Review and Meta-analysis. Paige 2017 JAMA.