Browsing by Author "Salgado, G."

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    Bilateral reversed palmaris longus muscle: a rare anatomical variation
    (VIA MEDICA, 2012) Salgado, G.; Cantin, M.; Inzunza, O.; Munoz, A.; Saez, J.; Macuer, M.
    We report a case of bilateral reversed palmaris longus muscle (PLM). The muscle was tendinous in its upper portion and muscular in its lower portion in both arms. This rare variation has been mentioned only once in the literature as a surgical finding. According to the literature, a reversed PLM may cause a compartment syndrome in the wrist area, carpal tunnel, and Guyon's syndrome. The described variation is also useful to the hand surgeon as a tendon graft a tendon for transfer, or as an anatomical landmark for operations at this area. (Folia Morphol 2012; 71, 1:52-55)
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    Stereological Quantification of Extraocular Muscles in Humans
    (2021) San-Martin, J.; Luna, C.; Garreton, R.; Araneda, S.; Salgado, C.; Rodriguez, A.; Salgado, G.
    The aim of this study is to quantify muscular and connective tissue volumes of extraocular muscles (EOM) in humans with no ophthalmological disease using stereology. EOM from five cadaveric non-strabismic humans were obtained. The number of muscle fibers in 5,000 mu m(2) and volume density (Vv) of muscle and collagen were measured using stereology. Comparisons between antagonist EOM were conducted using Wilcoxon signed rank test for paired samples. A secondary analysis examining differences between pairs of EOM was also conducted. Bilateral tests were performed, and significance was set at 0.05. The horizontal rectus muscles (medial and lateral rectus) had the highest Vv of muscle and the lowest Vv of collagen. The inferior rectus muscle tended to have a fewer number of fibers per 5,000 mu m(2) than the rest of the EOM. However, these differences did not reach statistical significance. This is the first published study describing the normal histology of human EOM using stereology. Our investigation, through the quantification of the proportion of muscle and collagen tissue, as well as the number of muscle fibers in 5,000 mu(2), establishes normal stereological parameters for EOM of humans without ophthalmological disease.