Fracture prediction for the femoral neck using finite element models.
Fracture of the femoral neck is an important clinical, social and economic topic. Prediction in subjects who are at risk for this type of fracture has been the object of numerous studies. Nonetheless, the methods of classification based on densitometric indicators alone have shown poor accuracy. It is the purpose of this study to propose a method to obtain an estimate of the resistance of the proximal femur, and to improve accuracy in prediction in subjects who are at risk for fracture. Based on the densitometric dataset alone, a bidimensional finite element model was developed that takes into account the distribution of density together with the femoral anatomy and the typical conditions of trauma. The model was applied to a group of preliminary osteoporotic patients. The statistical classification showed an increase in accuracy by 13%, as compared to a classification based on densitometric indicators alone.
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Laboratorio di Tecnologia Medica, Istituti Ortopedici Rizzoli, Bologna, Italia.
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D000328:Adult; D003720:Densitometry; D005265:Femoral Neck Fractures / Q000209:etiology*; D020342:Finite Element Analysis; D006801:Humans; D008962:Models, Theoretical; D010024:Osteoporosis / Q000150:complications* / Q000175:diagnosis; D012189:Retrospective Studies; D012307:Risk Factors