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Updated: Jan 1, 2026

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Published on: March 22, 2018
InternalBrace has biomechanical properties comparable to suture button but less rigid than screw in ligamentous
Justin Hopkins1, Kevin Nguyen2, Nasser Heyrani1
1Department of Orthopaedic Surgery, University of California Davis, 48600 Y St, Suite 3800, CA, 95817, USA.
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.
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