Which population may present with atypical osteoporosis presentations?

• A. Adolescent athletes with stress fractures but normal bone density
• B. Men with fragility fractures
• C. Children with rickets
• D. Young adults with no risk factors

Answer: (B)

Osteoporosis can show up in populations outside the typical elderly woman scenario, and fragility fractures in men are a classic example. A fragility fracture is one that happens from low-energy trauma (like a fall from standing height) that wouldn’t normally cause a fracture in healthy bone. When a man experiences such a fracture, it signals underlying low bone density and osteoporosis, even though this demographic isn’t the stereotypical patient. In men, osteoporosis can be due to age-related bone loss or to secondary factors such as hormonal issues (like low testosterone), chronic illness, or medications (for example, long-term steroids). This makes the presentation atypical compared with the common postmenopausal pattern.

In contrast, a stress fracture in an adolescent athlete usually reflects repetitive mechanical load on otherwise normal bone, not generalized osteoporosis. Rickets occurs in children due to defective bone mineralization from vitamin D or phosphate deficiencies, which is a different disease process from osteoporosis. A healthy young adult with no risk factors would be unlikely to have osteoporosis at all.

So the best explanation is that osteoporosis can present in men as fragility fractures, highlighting an atypical demographic and reinforcing the need to evaluate bone density in men who sustain such fractures.