Which T-score value indicates osteoporosis by WHO criteria?

Which T-score value indicates osteoporosis by WHO criteria?

• A. -1 SD or better
• B. -1 to -2.5 SD
• C. -2.5 SD or lower
• D. -2 SD to 0 SD

Answer: (C)

A T-score value of -2.5 standard deviations (SD) or lower indicates osteoporosis according to the World Health Organization (WHO) criteria. This measurement reflects a significant decrease in bone density, which places individuals at a higher risk for fractures and other complications associated with osteoporosis. The use of T-scores, derived from dual-energy X-ray absorptiometry (DXA) scans, aids in categorizing bone density levels. A T-score of -1 SD or better indicates normal bone density, while scores between -1 and -2.5 SD define osteopenia, which is a precursor to osteoporosis but not as severe. Knowing these thresholds is critical for accurate diagnosis and treatment planning in individuals at risk for or demonstrating signs of osteoporosis. Understanding these criteria is essential for healthcare professionals involved in assessing and managing bone health.

A T-score value of -2.5 standard deviations (SD) or lower indicates osteoporosis according to the World Health Organization (WHO) criteria. This measurement reflects a significant decrease in bone density, which places individuals at a higher risk for fractures and other complications associated with osteoporosis.

The use of T-scores, derived from dual-energy X-ray absorptiometry (DXA) scans, aids in categorizing bone density levels. A T-score of -1 SD or better indicates normal bone density, while scores between -1 and -2.5 SD define osteopenia, which is a precursor to osteoporosis but not as severe. Knowing these thresholds is critical for accurate diagnosis and treatment planning in individuals at risk for or demonstrating signs of osteoporosis. Understanding these criteria is essential for healthcare professionals involved in assessing and managing bone health.