Journal
JOURNAL OF ELECTRON MICROSCOPY
Volume 61, Issue 5, Pages 327-334Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jmicro/dfs057
Keywords
tendon healing; collagen arrangement; scanning electron microscopy; cell maceration; fibrous structure; axialization
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We used scanning electron microscopy (SEM) with cell maceration as the main method of analysis. Pretreatment with cell maceration removed the cellular components successfully. This allowed precise visualization of each collagen fiber and the three-dimensional network of the fibers. This study was the first to apply the cell-maceration/SEM method to observe tendon tissue. Seven days after surgery, new collagen fibers grew extensively in the repair site in a random arrangement. Fourteen days after surgery, the collagen fibers began to form an axial arrangement. Near the tendon stump, this change progressed from the outer layer to the core region. On the other hand, in the middle of the repair site, it progressed from the core to the outer layer. Change in the axial arrangement of collagen fibers contributes to the connection between the repair site and the tendon stump and to the separation of the repair site from the paratenon.
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