Comparison of Muscular and Articular Factors during Joint Contracture Formation in Acute Spinal Cord Injury

  • MORIYAMA Hideki
    Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University
  • TSUNODA Ikuko
    Department of Rehabilitation, Takeda General Hospital
  • YAE Miwa
    Department of Rehabilitation, Yayoi Hospital
  • SAKA Yukari
    Department of Physical Therapy, Faculty of Health Sciences, Hiroshima International University
  • TAKEMOTO Hidenori
    Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima
  • KAWANO Ichiro
    Department of Rehabilitation Medicine, Kyushu University Hospital
  • HOSODA Masataka
    Department of Physical Therapy, Ryotokuji University
  • TAKAYANAGI Kiyomi
    Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University
  • ITO Toshikazu
    Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University
  • TOBIMATSU Yoshiko
    Department of Diagnosis and Treatment, Hospital of National Rehabilitation Center for Persons with Disabilities

Bibliographic Information

Other Title
  • ラット脊髄損傷後早期の関節拘縮進行過程における筋と関節構成体の関与

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Abstract

Introduction: The objective of this study was to determine the rate of contracture progression and the direction of loss in joint movement, and to identify the relationship between the muscular and articular factors leading to contractures in acute spinal cord injuries. Methods: Twenty female Wistar rats were allocated to one of 5 equal sized groups that were assessed respectively at preinjury, 3, 5, 7, or 14 days after spinal cord injuries. The degree of contractures was assessed by measuring the femorotibial angle on both hindlimbs with the use of a goniometer. Knee joint motion was measured for flexion and extension. Myotomy of the transarticular muscles was then performed and range of motion was measured again. Results: The spinal cord-injured animals demonstrated a flaccid paralysis during the first 7 days postinjury and thereafter spastic paralysis. Contractures progressed for 14 days after spinal cord injuries, regardless of changes in muscle tone. Loss in joint movements was produced almost exclusively by a loss in the extension range of motion. Both the muscles and the articular structures contributed to the progression of the contracture, and these components are factors in the promotion of contracture development. In particular, the muscular factors were greater than the articular factors in extension angular displacement in which the range of motion was restricted. Discussion: Based on our findings of contractures in acute spinal cord injuries, in addition to the changes of the articular structures, more attention should be directed to the changes of the muscles.

Journal

  • Physical Therapy Japan

    Physical Therapy Japan 35 (7), 318-324, 2008-12-20

    Japanese Society of Physical Therapy

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