Experimental and Numerical Analysis of Augmented Locking Plate Fixation Repair for Proximal Humeral Fractures
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Failure of locking plate fixation due to varus collapse is a common problem for the elderly population who have osteoporotic bone with comminuted fractures. However, it is possible to increase the stability and the stiffness of the fixation system by using intramedullary fibular graft. This study compares the effectiveness of the augmented versus non-augmented locking plate fixation under clinically relevant cyclic loading. Nine pairs of cadaveric humeri were utilized with one side fixated using the augmented system and the other using the non-augmented one. Analysis of the results revealed that the augmented constructs can withstand at least three times the number of cycles to failure than the other one.
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