Estimating Site-Specific Muscle Loss: A Valuable Tool for Early Sarcopenia Detection?

Currently, sarcopenia is commonly diagnosed using the appendicular lean mass calculation derived from the dual-energy X-ray absorptiometry (DXA) estimate. However, the DXA estimate of lean mass only gives a regional estimate of body composition and cannot differentiate different muscle groups. In contrast, diagnostic B-mode ultrasound can provide reliable estimates of individual muscle groups and may provide a method for earlier detection of...