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Incidence of femoral shaft fracture was 1.33 fractures per 10,000 people in the US in 1994 [1].The annual incidence of midshaft femur fractures, as shown by a Swedish study is approximately 10 per 100,000 person-years in 2009 [2].The incidence peaks among the young, decreasing after age 20, and then again in the elderly.The annual Incidence in different published series has increased at 10% per year.Etiology of fracture being motor vehicle accidents, fall from height and domestic accidents.However, the causes of Nonunion have never been analyzed well.
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Ram Kewal Shah (2016) studied this question.