Evaluation of hollow mesh augmentation on the biomechanical properties of the flexor tendon repaired with modified Kessler technique

Haoyu Liu, Andrew Thoreson, Assaf Kadar, Steven Moran, Chunfeng Zhao

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: The aim of the study was to test flexor tendon repair with a novel hollow mesh suture augmentation served as a centre core cable [Triple-C (Tri-C)] in an in vitro study using a turkey model. Methods: Forty long digits from white turkey feet were divided into the following four groups based on repair techniques: Group 0, intact tendon without repair; Group 1, modified Kessler (MK) repair only (MKo); Group 2, MK repair plus Tri-C (MK ​+ ​Tri-C); and Group 3, MK repair plus an additional outside knot plus Tri-C (MK-2knots ​+ ​Tri-C). Mechanical evaluations were performed for all groups. Results: The frictions of the two groups with Tri-C were not significantly different than those of the MKo group. The ultimate tensile strength of the MK ​+ ​Tri-C group was not significantly different from that of the MKo group or the MK-2knots ​+ ​Tri-C group. In contrast, the MK-2knots ​+ ​Tri-C group had a significantly greater ultimate tensile strength compared with that of the MKo group. Forces at 2-mm gap formation in the groups with Tri-C were significantly stronger than that of MK alone. Conclusion: Our data have demonstrated that MK repair augmented with the centre hollow mesh suture increased failure strength without inducing increased friction. The translational potential of this article: Our study elucidates that a Tri-C augmentation designed in this study can achieve mechanical enhancements without increasing the repaired tendon friction. Hence, this novel technique has potential biological validity and clinical application.

Original languageEnglish (US)
Pages (from-to)80-85
Number of pages6
JournalJournal of Orthopaedic Translation
Volume20
DOIs
StatePublished - Jan 2020

Keywords

  • Centre core cable
  • Flexor tendon
  • Mechanical evaluations
  • Repair

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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