Which term describes decreased bone density?

• A. Osteopenia
• B. Radi/o
• C. Osteoporosis
• D. Lower Limb

Answer: (C)

Bone density reflects how strong bones are; when it decreases, bones become more fragile. Osteoporosis is the disease that describes a significant loss of bone density with deterioration of bone tissue, leading to fragile bones and a higher risk of fractures. While osteopenia also means decreased density, it denotes a milder reduction and is usually considered a precursor to osteoporosis. The other options don’t describe bone density: radi/o relates to X-rays or radiology, and the lower limb is just a body region. So, when the emphasis is on a clinically meaningful decrease in bone density that impacts strength and fracture risk, osteoporosis is the best-fitting term.