What does a bone density scan evaluate?

A bone density scan is specifically designed to evaluate bone mineral density. This test measures the amount of mineral matter within a specific volume of bone, which is crucial for assessing bone strength and the risk of fractures. A higher bone mineral density typically indicates stronger bones, while lower values can indicate conditions like osteoporosis or other bone-related diseases.

The scan uses dual-energy X-ray absorptiometry (DEXA) technology to produce precise images that can identify changes in bone density over time. This is particularly important for individuals at risk of bone diseases, elderly patients, or those with conditions that affect bone health.

In contrast, evaluating muscle strength, joint flexibility, or cartilage health involves different methods and tests, such as physical examinations, functional tests, and imaging techniques focused on soft tissue or joint function rather than bone density itself. Therefore, the bone density scan is uniquely focused on the mineral content and overall health of the bones.