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.
- Orthopaedic surgery
ASJC Scopus subject areas
- Orthopedics and Sports Medicine