Final answer:
The APRN should suspect osteoporosis in an older adult patient with a fragility fracture of the femur, as it is a common condition leading to weakened bones and fractures, especially in the elderly.
Step-by-step explanation:
The APRN should suspect that the older adult patient with a fragility fracture of the femur has osteoporosis. Osteoporosis is a disease characterized by a reduction in bone density and weakening of the bone structure, particularly affecting the proximal ends of the femur, vertebrae, and wrist. It is the most common cause of fractures among the elderly, and these fractures can occur with minor stress or even spontaneously because of the compromised bone strength. Histologically, osteoporosis shows a reduction in the thickness of compact bone and changes in the trabeculae of cancellous bone.
Given the patient's small frame, age, and the occurrence of a fragility fracture, osteoporosis would be a primary condition to assess for further complications. Registered nurses and other healthcare professionals must be attentive to such diagnoses as they have significant implications for the patient's future mobility and overall health.