Finite Element Analysis of External Fixation for Mid-Shaft Clavicle Fractures Using Locking Compression Plates

Abstract

Clavicle implant models were accurately engineered in this study to simulate the stiffness features of an external locking compression plates (LCP) fixator used in managing mid-shaft clavicle fractures. The research systematically assessed 4-screw, 6-screw, and 8-screw configurations under varying load conditions, including axial compression, torsion, and 4-point bending. The results underscore the biomechanical superiority of the 6-screw configuration, which demonstrated enhanced stiffness values of 124.39 N/mm in axial compression, 322.71 N.mm/degree in torsion, and 1,023.02 N/mm in 4-point bending. These findings surpass those associated with unilateral methods, where stiffness values range from 117 to 126 N/mm under axial compression. The study offers critical insights into the optimization of fracture management, positing that the 6-screw configuration provides considerable biomechanical advantages. Surgeons can use these findings to make informed decisions about screw configurations, potentially improving clinical outcomes by reducing hospitalization periods, re-operation rates, and complication risks. This research contributes to more effective resource management in the surgical treatment of midshaft clavicle fractures.