Biomechanical analysis of a support system for proximal femur nail in an intertrochanteric fracture model
DOI:
https://doi.org/10.1016/j.rccot.2016.02.005Keywords:
compression fatigue test, proximal femur, intertrochanteric fractures, intramedullary fixationAbstract
Introduction: The intertrochanteric fractures of the proximal femur are presented mostly due to trauma in the elderly. The incidence of these fractures has been increasing in frequency in recent years due to the aging of the population. The purpose of this study was to determine the fatigue performance of the branded Support system for the treatment of intertrochanteric fractures of the proximal femur by biomechanical analysis.
Materials and methods: The analysis was performed on synthetic bone models with intertrochanteric fractures. The mechanical characteristics of the system were first determined using a static compression test, and then compression fatigue tests were performed to complete one million cycles or until a displacement of the femoral head of greater than 5 mm was produced.
Results: The results show that the fatigue strength of the Support system is sufficient in order to be able to withstand the loads to which it is subjected during the time from surgery to fracture healing.
Discussion: Further work is recommended to evaluate the performance ofthe system, where the main action of the muscles acting on the hip joint and in a simulated physiological environment is considered.
Evidence level IV.
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