Abstract: | Among 246 adult subjects persistent transverse radiopaque lines at the distal aspect of the tibia were observed in 30% of women and 14% of men aged 25 to 50, and 14% of women and 8% of men aged 51 to 86. Measured from the distal end of the tibia, it was clear that the persistent transverse lines had been laid down in infancy and childhood rather than during puberty. There was evidence that the age-associated decrease in transverse lines was due to cortical remodeling both endosteally and subperiosteally. |