During reconstructive procedures performed 4 to 16 wk after the tendon lesion, specimens obtained from the injured muscle were examined. It was found that after tendon injury, disuse atrophy developed and a condition of equilibrium could be observed. The most important changes in the fine structure were seen in the contractile elements: these were atrophied, homogenized, fragment and ragged, independently from the functional unities. The number of mitochondria was considerably decreased, the sarcoplasmic reticulum was increased, and the difference between the originally red and white muscular fibers was indistinct. The glycogen content of the musculature was decreased, or had disappeared completely. No pathologic changes were observed in the sarcolemma, the cell nuclei or the motor nerve end organs.
|Number of pages||8|
|Journal||Magyar Traumatologia Orthopaedia es Helyreallito Sebeszet|
|Publication status||Published - Jan 1 1975|
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