Age-related bone loss

The mg of hydroxyapatite lost with age was measured using high-resolution peripheral CT of the distal radius in a cross-sectional study of 122 White females with a mean age of 62.8 (range 27 to 98) years. Please note that most bone lost after the age of 65 was cortical. Cortical porosity was measured using scanning electron microscopy of postmortem specimens of femora from 24 females with a mean age of 69 (range 29 to 99) years and is depicted in a schematic fashion.