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Histological evaluation of cellular response to a multifilament electrospun suture for tendon repair

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posted on 2024-06-27, 15:24 authored by Mustafa Rashid, Jayesh Dudhia, Stephanie G Dakin, Sarah Snelling, Antonina Lach, Roberta De Godoy, Pierre-Alexis Mouthuy, Roger Smith, Mark Morrey, Andrew J Carr

Background

Rotator cuff tendon repair in humans is a commonly performed procedure aimed at restoring the tendon-bone interface. Despite significant innovation of surgical techniques and suture anchor implants, only 60% of repairs heal successfully. One strategy to enhance repair is the use of bioactive sutures that provide the native tendon with biophysical cues for healing. We investigated the tissue response to a multifilament electrospun polydioxanone (PDO) suture in a sheep tendon injury model characterised by a natural history of failure of healing.

Methodology and results

Eight skeletally mature English Mule sheep underwent repair with electrospun sutures. Monofilament sutures were used as a control. Three months after surgery, all tendon repairs healed, without systemic features of inflammation, signs of tumour or infection at necropsy. A mild local inflammatory reaction was seen. On histology the electrospun sutures were densely infiltrated with predominantly tendon fibroblast-like cells. In comparison, no cellular infiltration was observed in the control suture. Neovascularisation was observed within the electrospun suture, whilst none was seen in the control. Foreign body giant cells were rarely seen with either sutures.

Conclusion

This study demonstrates that a tissue response can be induced in tendon with a multifilament electrospun suture with no safety concerns.

History

Volume

15

Issue number

6

Page range

e0234982-e0234982

Publication title

PLOS ONE

ISSN

1932-6203

Publisher

Public Library of Science (PLoS)

Location

United States

Editors

Wang JH-C

Language

  • eng

Item sub-type

Article, Journal

Media of output

Electronic-eCollection

Affiliated with

  • ARU Writtle Outputs