Biomechanical Cadaveric Evaluation of Partial Acute Peroneal Tendon Tears

Emilio Wagner, Pablo Wagner, Cristian Alejandro Ortiz Mateluna, Ruben Radkievich, Felipe Palma, Rodrigo Antonio Guzmán Venegas

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Background: 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. Methods: 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. Results: 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. Conclusion: In a cadaveric model of peroneal tendon tears, 33% of remaining peroneal tendon could resist high tensile forces, above the physiologic threshold. Clinical Relevance: 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.

Original languageEnglish
Pages (from-to)741-745
Number of pages5
JournalFoot and Ankle International
Volume39
Issue number6
DOIs
StatePublished - 1 Jun 2018

Bibliographical note

Publisher Copyright:
© 2018, © The Author(s) 2018.

Keywords

  • 50% rule
  • peroneal tendon tears
  • rupture
  • tenodesis

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