Abstract

• Osteoporosis represents reduced amount of bone mass per unit volume as compared with controls of the same age and sex. In this condition, bone mineral density decreases and the skeleton becomes more prone to fracture. The purpose of this study was to show how bone mineral densities of the femoral neck area decrease with aging, to in vestigate the relationship between the bone mineral densities of the control and fracture group, and to obtain fracture threshold values. This report observed BMD of femoral neck region in femoral neck and intertrochanteric fracture group was less than that of control group and the differences were significant. We measured and evaluated BMD of femoral neck region by DEXA in 234 normal volunteers(99 men and 135 women), in 105 patien ts with femoral neck fracture(41 men and 64 women) and in 103 patients with intertrochanteric fracture(40 men and 63 women) above 50 years-old. Following results were obtained: 1. The average BMD of femoral neck region in control group, femoral neck fracture group and intertrochanteric fracture group were 0.751±0.030 g/cm2 in male and 0.661±0.089g/cm2 in female, 0.660±0.031g/cm2 in male and 0.557±0.002g/cm2 in female and 0.661±0.008g/cm2 in male and 0.562±0.005g/cm2 in 2. The BMD of the control group and fracture group decreased with aging and were higher in men than in women and there were statistically significant difference(p<0.001). 3. There were statistically significant difference between BMD of the control group and BMD of the hip fracture group(p<0.005) but no significant differences between BMD of the femoral neck fracture group and intertrochanteric fracture group. 4. Fracture threshold of the hip fracture group were 0.815g/cm2(male:0.832g/cm2, female:0.733g/cm2) according to 95 percentile.
• Key words: Hip Joint, Osteoporosis, Bone mineral density, Fracture threshold

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