Age-related changes of femoral mineral density in the proximal third

The mineral density (MD) of femoral proximal third has been studied in 2880 practically normal subjects using GE/Lunar (USA) roentgen double-energy bone densitometer. Ward triangle is the area where MD decrease has been revealed in the earliest period of time (at the age of 31-35 years in women). At the age of 70 years the area of large trochanter in women is 15 % decreased, in men - 16 % decreased. In femoral necks of women MD decrease on the left and on the right has been revealed at the age of 56-60 years, at the age of 65 osteopenia has been ascertained (T-criterion - -1,8-1,9 SD), and at the age of 71-75 - osteoporosis (-2,7 SD). In men osteopenia has been diagnosed at the age of 71-75 years, osteoporosis - at the age of 85.