Ralph Hutchings

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The upper end of the femur or upper long bone of the human leg showing a section through the head and neck of the bone. The trabeculae visible inside form the internal supportive structure of long bones. Hip fractures most often occur at the neck of the femur, which is the thinner section that sits just outside of the hip joint. In old age, the density of the neck of the femur decreases (osteoporosis) and the hip becomes vulnerable to fracture.