InternalBrace has biomechanical properties comparable to suture button but less rigid than screw in ligamentous lisfranc model.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 31879465.
- Also identified by DOI 10.1016/j.jor.2019.06.020 and PMC identifier 6919361.
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Abstract
The aim of this study was to investigate the biomechanical properties of the InternalBrace for lisfranc injuries. A Sawbone model was developed comparing screw, suture button and InternalBrace. 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. The mechanical properties of the InternalBrace support clinical use, but further studies are needed regarding early weight bearing.