H. Dinc et al., BONE-MINERAL DENSITY-MEASUREMENT BY QUANTITATIVE COMPUTED-TOMOGRAPHY IN A NORMAL TURKISH POPULATION, European journal of radiology, 21(2), 1995, pp. 79-83
Purpose: To observe the trabecular and cortical bone mineral density v
alues of a normal Turkish population, to examine the effect of age in
males, and age and duration of menopause in a female population on bon
e mineral density. Also to compare Turkish population bone mineral den
sity values with the reference values in developed countries. Material
s and methods: Trabecular and cortical bone mineral densities were mea
sured by the quantitative CT method in 255 (110 male and 145 female) n
ormal cases. Results: According to the linear regression test results,
loss of bone mineral density per year was 1.97 mg/ml and 2.09 mg/ml f
or females and 1.37 mg/ml and 1.04 mg/ml for males in the trabecular a
nd cortical bone compartments, respectively. A 70-year-old female lose
s 56.7% and 31.3% of the bone mass at 20 years of age for the trabecul
ar and cortical compartments, respectively. These ratios were 41% and
16.1% for the male population. Most loss in bone mass was observed in
the premenopausal and early postmenopausal period. In the postmenopaus
al period, duration of menopause had more effect on bone mass than age
. Loss of trabecular bone mass per year in the postmenopausal period w
as 2.36 mg/ml and 2.84 mg/ml with respect to age and duration of menop
ause, respectively. Conclusions: Quantitative CT is a valuable method
to determine bone mass because it allows to detect bone mass of trabec
ular and cortical bone separately. Loss in trabecular bone was found t
o be higher than in cortical bone for both sexes, while overall bone l
oss was higher in females. Rate of loss increases in the menopause per
iod. Duration of menopause had more effect on bone mass than age. Bone
mineral density values in Turkey were similar to reference values of
western countries.