| Objective To explore the relationship between the occurrence of osteoporotic fracture and height, body weight and body mass index (BMI). Methods A total of 1936 patients with osteoporosis diagnosed in our hospital since 2012 were enrolled in this study. Among them, 472 patients were diagnosed with osteoporotic fractures. The differences in height, body weight and BMI between osteoporotic fracture group and non-fracture group were analyzed and the relationship between height, weight, BMI and osteoporotic fracture risk were further analyzed according to the site of fracture and age groups. Results Body weight and body mass index of the osteoporotic fracture group were lower than those of the non-fracture group (P<0.01), but there was no significant difference between the two groups in height. The BMI of those who had vertebral compression fracture was the highest among all fracture type, and BMI was the lowest in the hip fracture group (P<0.05). According to BMI categories, 56.5% of hip fractures were found in the low body weight group, while 43.01% of spinal compression fractures were found in the overweight group, the difference was statistically significant (P<0.05). The T-score of bone mineral density increased with the increase of BMI, and there was significant positive correlation between the two parameters (P<0.01). Conclusion Body weight and BMI are related to the occurrence of osteoporotic fractures. BMI and bone mineral density T-score was positively correlated. However due to the different stress mechanism on fracture of different sites, the influence of body weight and BMI on fracture of different sites are different, such as that low BMI could easily lead to hip fractures, whereas high BMI could easily lead to spinal compression fractures. |