If a patient's serum calcium level is 12 mg/dL after suffering a femoral fracture, what type of fracture might be suspected?

The scenario presents a patient with a serum calcium level of 12 mg/dL following a femoral fracture. This elevated level of calcium in the blood can be indicative of certain underlying conditions that weaken the bone structure, leading to specific types of fractures.

A pathological fracture occurs in bones that are weakened by underlying diseases, such as metastatic cancer, osteoporosis, or conditions that result in increased calcium levels, like hyperparathyroidism. The presence of high serum calcium suggests that there may be an abnormality in bone metabolism or structure, making the bone more susceptible to fracture even with minimal or no trauma, which aligns with the definition of a pathological fracture.

In contrast, a fatigue fracture is typically the result of repetitive stress over time rather than an underlying condition that weakens the bone. A greenstick fracture usually occurs in children due to soft, flexible bones that don't break all the way through, and a buckled fracture is often seen in children as well, resulting from compression forces. Given the elevated calcium level, the suspicion for a fracture type closely linked to a pathological condition is the most appropriate conclusion.