InternalBrace has biomechanical properties comparable to suture button but less rigid than screw in ligamentous lisfranc model

Justin Hopkins, Kevin Nguyen, Nasser Heyrani, Trevor Shelton, Christopher Kreulen, Tanya Garcia-Nolen, Blaine A. Christiansen, Eric Giza

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Purpose: The aim of this study was to investigate the biomechanical properties of the InternalBrace for lisfranc injuries. Methods: A Sawbone model was developed comparing screw, suture button and InternalBrace. Results: When loaded in axial tension at 0.5 mm/s, the screw was stiffest (2,240 N/mm), while the InternalBrace (200 N/mm) was stiffer than the suture button (133 N/mm). Cyclic loading with 10,000 cycles of 69 N, 138 N, and 207 N showed the InternalBrace maintained stiffness, but fatigued earlier than the suture button. Conclusion: The mechanical properties of the InternalBrace support clinical use, but further studies are needed regarding early weight bearing.

Original languageEnglish (US)
Pages (from-to)7-12
Number of pages6
JournalJournal of Orthopaedics
Volume17
DOIs
StatePublished - Jan 1 2020

Keywords

  • InternalBrace
  • Lisfranc
  • Orthopaedic surgery
  • Sawbones

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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