Abstract: Objective To explore risk factors of osteoporotic fracture in elderly women in Zhuhai in 2017.Methods A simple sampling method was used to select female patients with osteoporotic fractures aged 50-70 years in Zhuhai City as a case group and healthy women who underwent a physical examination as a control group to conduct a questionnaire survey. The survey contents included demographic characteristics, age, marital status, family income, education, outdoor activities, BMI, menarche age, menopausal age, number of pregnancies, number of fetuses, history of fractures, history of drinking, history of smoking, frequency of milk intake, etc. Univariate and multivariate logistic regressions were used to determine the factors affecting osteoporotic fractures in this age group.Results A total of 200 women aged 50-70 years with osteoporotic fractures were included in the study as the case group and 200 healthy women aged 50-70 years as the control group. In the case group, 75.0% were aged 60-70 years, 80.0% were married, 60.0% had family monthly income of less than 5 000 Yuan, and 60.0% had the educational level at junior college or above; in the control group, 66.5% were aged 60-70 years, 85.0% were married, 55.0% had family monthly income of less than 5 000 Yuan, and 57.5% had the educational level at junior college or above. The multivariate logistic regression showed that the history of fracture （OR=4.116）, history of smoking （OR=3.904）, and menopausal age <45 years （OR=4.229） were risk factors for osteoporotic fractures in women aged 50-70 years; while the amount of outdoor activity ≥60 min /day （OR=0.417） and milk intake frequency ≥3 times/week （OR=0.191） were protective factors for female fractures of this age group.Conclusion Outdoor activity, fracture history, smoking history, milk intake frequency and menopausal age are the influencing factors of osteoporotic fracture in women aged 50-70 years. The large amount of outdoor activities and high frequency of milk intake can reduce osteoporosis in women.

Key words: Osteoporosis, Elderly women, Fracture, Risk factors