Peripheral quantitative computed tomography of the distal radius in young subjects - new reference data and interpretation of results.

Application of bone densitometry to clinical use requires the availability of accessible reference data and is helped by an interpretative framework that is based on bone physiology. The aim of this contribution is to provide both reference data and help in the interpretation of results for peripheral quantitative computed tomography (Stratec XCT2000 performed at the distal radius of young subjects. Data from a previous reference data study on 478 subjects between 6 and 40 years were re-analyzed and smooth curves were fitted. The corresponding equations allow for calculation of age- and sex-specific z-scores of bone mineral content, volumetric bone mineral density (vBMD) of the trabecular compartment, vBMD of the entire radial cross-section, total cross-sectional area and cortical thickness. These data should facilitate the clinical use of peripheral quantitative computed tomography in young subjects.