alexa Long durations of immobilization in the rat result in enhanced mechanical properties of the healing supraspinatus tendon insertion site.
Physicaltherapy & Rehabilitation

Physicaltherapy & Rehabilitation

Journal of Novel Physiotherapies

Author(s): Gimbel JA, Van Kleunen JP, Williams GR, Thomopoulos S, Soslowsky LJ

Abstract Share this page

Abstract Rotator cuff tears frequently occur and can lead to pain and decreased shoulder function. Repair of the torn tendon back to bone is often successful in relieving pain, but failure of the repair commonly occurs. Post-operative activity level is an important treatment component that has received minimal attention for the shoulder, but may have the potential to enhance tendon to bone healing. The objective of this study was to investigate the effect of short and long durations of various activity levels on the healing supraspinatus tendon to bone insertion site. Rotator cuff tears were surgically created in Sprague-Dawley rats by detaching the supraspinatus tendon from its insertion on the humerus and these tears were immediately repaired back to the insertion site. The post-operative activity level was controlled through shoulder immobilization (IM), cage activity (CA), or moderate exercise (EX) for durations of 4 or 16 weeks. The healing tissue was evaluated utilizing biomechanical testing and a quantitative polarized light microscopy method. We found that activity level had no effect on the elastic properties (stiffness, modulus) of the insertion site at four weeks post injury and repair, and a decreased activity level had a positive effect on these properties at 16 weeks (IM>CA=EX). Furthermore, a decreased activity level had the greatest positive effect on these properties over time (IM>CA=EX). The angular deviation of the collagen, a measure of disorganization, was decreased with a decrease in activity level at 4 weeks (IM
  • DOI: 10.1115/1.2721075
  • This article was published in J Biomech Eng and referenced in Journal of Novel Physiotherapies

    Relevant Expert PPTs

    Relevant Speaker PPTs

    • Uduakobong E Ntuk
      Ethnic variation in the contribution of cardiorespiratory fitness and muscular strength to diabetes: Cross-sectional study of 68,116 UK Biobank participants
      PPT Version | PDF Version

    Recommended Conferences

    Relevant Topics

    Peer Reviewed Journals
     
    Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
    International Conferences 2017-18
     
    Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

    Contact Us

     
    © 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
    adwords