| Objective To investigate the prevalence of osteoporosis in 4057 female patients of Shengjing Hospital in Shenyang City, Liaoning province. Methods 4057 female cases aged 16-90 years, who had bone density examination in our hospital from 2013 to 2016, were chosen as the research subjects. Bone mineral density was measured using Norland XR-600 bone densitometer. T-score and BMD of three regions of left hip were obtained, and at the same time data on height, weight, age and other information were collected. Participants were grouped according to T-score of different hip regions, age and BMI for statistical analysis. Results (1) 4057 women were included in the study. BMD and T-score of the three regions of left hip (femoral neck, greater trochanter, and Ward’s triangle area) were significantly different by age and BMI (P<0.001). Between the age groups of ≤39 years and 40-49 years, there were no significant differences in BMD and T-score of the three regions of hip (P>0.05). In those aged above 49 years, with every 10 years of increase in age, BMD and T-score decreased significantly. (2) BMD and T-score of Ward’s triangle, greater trochanter and femoral neck of different age groups were significantly different (P<0.001). (3) In the osteoporotic population, the mean age of osteoporosis in the trochanteric region was 65.84±10.65 years, of the femoral neck was 72.08±9.36 years, and of the Ward’s triangle was 63.56±10.23 years. (4) Using chi-square test, femoral neck osteoporosis rate in the high BMI group was 0.6%, in the normal BMI group 3.4%, and in the low BMI group 13.1% (P<0.001). The rates for greater trochanter osteoporosis were 8.6%, 18.8% and 53.6% in the high, normal ad low BMI groups, respectively (P＜0.001). Conclusion (1) In the population aged 49 years and above, the bone mass of the three regions of the hip decreased rapidly. (2) With the increase in age, BMD and T-score of the Ward’s triangle area decreased the earliest and fastest, and the BMD and T-score of greater trochanter and femoral neck were relatively higher, with slower rate of decrease. (3) In the osteoporotic population, the average age of osteoporosis at the trochanteric region was the highest, followed by the femoral neck, and the lowest age was the Ward’s triangle. (4) The chi-square test was used to discuss the relationship between BMI and the incidence of osteoporosis. It was found that the osteoporosis rate of the three hip regions in the low BMI population was significantly higher. The prevalence of osteoporosis in the high BMI population was much lower than that in the low BMI population at femoral neck and trochanter. |