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The femur radiograph of a healthy 25-year-old female is compared to the femur radiograph of a healthy 85-year-old female. Which of the following best describes the 25-year-old's femur?
Increased cortical thickness and a smaller medullary canal volume
Decreased cortical thickness and a larger medullary canal volume
Equivalent cortical thickness and medullary canal volume
Increased cortical thickness and larger medullary canal volume
Decreased cortical thickness and a smaller medullary canal volume
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A 25-year-old male sustains a transverse humeral shaft fracture and undergoes open reduction and internal fixation with rigid compression plating. What kind of bone healing would be expected with this type of fracture fixation?
Primary bone healing through haversian remodeling
Secondary healing through callus formation
Primary healing through callus formation
Secondary healing through osteonal cutting cones