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atrophy |
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atrophyIn medicine, a diminution in size and function, or output, of a body tissue or organ. It is usually due to nutritional impairment, disease, or disuse (muscle). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The skeletal muscles of patients with CHF have been observed to have a decrease in the average diameters of the type I and type II fibers, selective atrophy of type II fibers, pronounced nonselective myopathy and hypotrophy of type I fibers, increased intracellular acid phosphatase activity, and increased intracellular lipid accumulation. [6,7] If an imbalance in the active medial and lateral forces exerted by the VMO and VL is responsible for initiating or perpetuating PFPS, the underlying mechanism for this active force imbalance could be morphological (eg, hypotrophy of the VMO relative to the VL) or functional (eg, inadequate neural drive to the VMO relative to the VL). |
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