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.
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.
Authors: R S Kuo; N C Tejwani; C W Digiovanni; S K Holt; S K Benirschke; S T Hansen; B J Sangeorzan Journal: J Bone Joint Surg Am Date: 2000-11 Impact factor: 5.284
Authors: Cassandra A Lee; John P Birkedal; Emilee A Dickerson; Paul A Vieta; Lawrence X Webb; Robert D Teasdall Journal: Foot Ankle Int Date: 2004-05 Impact factor: 2.827