Quantitative bone mineral assessment at the forearm: a review

Area of Science:

• Orthopedics
• Radiology
• Gerontology

Background:

• Forearm bone mineral density (BMD) and geometric properties are key indicators of bone health.
• Peripheral bone assessment offers advantages in accuracy and precision due to minimal soft tissue.
• The human radius allows for evaluation of both cortical and cancellous bone.

Purpose of the Study:

• To review non-invasive bone assessment procedures at peripheral sites, focusing on the distal radius.
• To present the accuracy, precision, and normative values of these assessment systems.
• To evaluate treatment responses and the ability to predict osteoporotic fractures.

Main Methods:

• Description of non-invasive bone assessment procedures for peripheral sites, including distal radius systems.
• Presentation of accuracy, precision, and normative data.
• Assessment of treatment efficacy and fracture prediction capabilities.

Main Results:

• Forearm scanning is a cost-effective, low-radiation screening tool for generalized osteoporotic bone loss.
• It shows a strong association with non-spine fracture risk.
• Direct measurement at the hip or spine provides higher accuracy for predicting fractures at those specific locations.

Conclusions:

• Forearm bone density scanning is a valuable screening tool for osteoporosis and non-spine fracture risk.
• Direct measurement at weight-bearing sites (hip, spine) is superior for predicting fractures at those specific anatomical locations.
• Monitoring treatment response at the distal forearm may require longer follow-up periods compared to highly trabecular sites.