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bibliography*The PainScience Bibliography contains plain language summaries of thousands of scientific papers and others sources, like a specialized blog. This page is about a single scientific paper in the bibliography, Reitinger 1996.

[Morphologic study of trigger points]


Tags: muscle pain, odd, muscle, pain problems

PainSci summary of Reitinger 1996?This page is one of thousands in the 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.

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These two articles on cite Reitinger 1996 as a source:

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: