Japanese Journal of Health Promotion and Physical Therapy
Online ISSN : 2187-3305
Print ISSN : 2186-3741
ISSN-L : 2186-3741
SHORT REPORT
The Effects of Joint Immobilization on the Anterior Cruciate Ligament in Rats
Kazuhiro HayashiTakeya OnoSadaaki OkiNamiko UmeiHideki IshikuraAtsushi TasakaSenma NagiKazuki AiharaYuta Sato
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2019 Volume 9 Issue 3 Pages 133-137

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Abstract

[Purpose] The maximum strength intensity of the anterior cruciate ligament and the morphological change in collagen fibers in the early stage of joint fixation were examined. [Participants and Methods] Wistar rats were used in this study. The left knee joint was fixed in the flexed position, and the right was untreated. The rats were divided into 3 groups of 1, 2, and 4 weeks of fixation. After each fixed period, maximum strength was measured in the form of a femur - anterior cruciate ligament - tibia tensile test. In addition, the arrangement of the collagen fibers was observed using a scanning electron microscope. [Results] The maximum strength intensity significantly lowered from 1 week after fixation, and the arrangement of the collagen fibers also changed. [Conclusion] At 1 week after joint fixation, the ligament strength decreased and the collagen fiber sequence change began, suggesting that there is a relationship between both.

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© 2019 Japan Society of Health Promotion and Physical Therapy

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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