| Objective To evaluate the clinical value of bone mineral density (BMD) in predicting the risk of osteoporotic hip fractures. Methods Seventy-two elderly patients with hip fractures in the trauma department of our hospital were retrospectively studied from June 2014 to June 2019. There were 31 cases of intertrochanteric fractures and 41 cases of femoral neck fractures. Sixty-three geriatric patients in our orthopedic clinic during the same period were selected as the control group. BMD of the lumbar spine and uninjured hip (total hip, intertrochanteric, femoral neck, and Ward area) was measured with DXA method. BMD of the lumbar and left hip was measured in the control group. The results were statistically analyzed. Results (1) BMD of the lumbar spine and hip in the fracture group was significantly lower than that in the control group, with statistically significant difference (P<0.01). (2) There were no statistically significant differences in BMD of the lumbar spine and hip between the intertrochanteric fracture group and the femoral neck fracture group (P>0.05). (3) The maximum reduction of T value at intertrochanteric area between fracture group and control group was 122.1%. The minimum reduction of T value at the lumbar was 31.3%. (4) The ratio of T value at the hip and lumbar spine was inverted after fracture. (5) The degree of hip osteoporosis between the control group and the fracture group was statistically significant (P<0.01). There was no significant difference in the degree of lumbar osteoporosis between the two groups (P>0.05). Conclusion (1) BMD of patients with osteoporotic hip fractures was significantly lower than that of patients without fractures, indicating that BMD was correlated with hip fracture to some extent, but it was not correlated with the type hip fractures. (2) In the risk assessment of hip fractures, BMD of the hip is more valuable than that of the lumbar vertebrae. (3) When the ratio of T value between the hip and the lumbar spine is inverted, the occurrence of hip fracture is inevitable. (4) Fragile fractures occur in some patients with normal bone mass, while some patients with osteoporosis do not have fractures, suggesting that the factors affecting the occurrence of fractures may be related to bone microstructure in addition to BMD. |