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Author: search.filters.author.Ruben RadkievichSubject: search.filters.subject.50% rule

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    Biomechanical Cadaveric Evaluation of Partial Acute Peroneal Tendon Tears
    (2018)
    WAGNER, EMILIO  
    ;
    WAGNER HITSCHFELD, PABLO  
    ;
    Cristian Ortiz
    ;
    Ruben Radkievich
    ;
    Felipe Palma
    <jats:sec><jats:title>Background:</jats:title><jats:p> No clear guideline or solid evidence exists for peroneal tendon tears to determine when to repair, resect, or perform a tenodesis on the damaged tendon. The objective of this study was to analyze the mechanical behavior of cadaveric peroneal tendons artificially damaged and tested in a cyclic and failure mode. The hypothesis was that no failure would be observed in the cyclic phase. </jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p> Eight cadaveric long leg specimens were tested on a specially designed frame. A longitudinal full thickness tendon defect was created, 3 cm in length, behind the tip of the fibula, compromising 66% of the visible width of the peroneal tendons. Cyclic testing was initially performed between 50 and 200 N, followed by a load-to-failure test. Tendon elongation and load to rupture were measured. </jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p> No tendon failed or lengthened during cyclic testing. The mean load to failure for peroneus brevis was 416 N (95% confidence interval, 351–481 N) and for the peroneus longus was 723 N (95% confidence interval, 578–868 N). All failures were at the level of the defect created. </jats:p></jats:sec><jats:sec><jats:title>Conclusion:</jats:title><jats:p> In a cadaveric model of peroneal tendon tears, 33% of remaining peroneal tendon could resist high tensile forces, above the physiologic threshold. </jats:p></jats:sec><jats:sec><jats:title>Clinical Relevance:</jats:title><jats:p> Some peroneal tendon tears can be treated conservatively without risking spontaneous ruptures. When surgically treating a symptomatic peroneal tendon tear, increased efforts may be undertaken to repair tears previously considered irreparable. </jats:p></jats:sec>
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