What could be a result of fractures when performing a DXA scan?

• A. Improved BMD readings
• B. Altered BMD results
• C. Consistent BMD values
• D. None of the above

Answer: (B)

When performing a DXA scan, a fracture can indeed lead to altered BMD results. This is primarily due to the fact that fractures can cause bone remodeling and changes in bone density in the affected area, as well as the surrounding regions. When a fracture occurs, it triggers a biological response leading to the healing process, which involves resorption and formation of bone. This process can temporarily or permanently alter the bone mineral density measurements captured during a DXA scan.

Additionally, the presence of a fracture may affect the interpretation of the DXA results. For instance, if a fracture alters the structural integrity of the bone or its surrounding tissues, it might influence the local BMD readings, making them appear either lower or higher than the actual bone density of healthy, non-fractured bone. This is crucial because accurate diagnosis and management of conditions such as osteoporosis depend heavily on precise bone density measurements.

Thus, altered BMD results due to fractures is the most accurate outcome when interpreting DXA scan results in patients with such injuries.