The Correlation between Proximal femur Fracture and Bone Mineral Density in the Elderly

Abstract

Abstract By summarizing the characteristics of bone mineral density (BMD) in older adults with proximal femoral fractures, to explore the relationship between (BMD and type of proximal femoral fractures in older adults. And to compare the BMD of the affected and unaffected sides of the femur, in order to pave ways for the prevention and treatment of proximal femoral fractures. A total of 876 patients with proximal femoral fractures (446 with femoral neck fractures and 430 with trochanteric fractures) were admitted to central hospitals affiliated to Shenyang Medical College over a three-year period. All patients underwent dual-energy x-ray absorptiometry (DXA) to evaluate the BMD of the lumbar spine and both sides of the femur. Differences in BMD were compared between the trochanteric and neck fracture groups, as well as between the affected and unaffected sides of the femur in all patients. The trochanteric fracture group had lower mean lumbar spine BMD (T-score: -2.66 ± 1.63) than the femoral neck fracture group (-1.56 ± 1.42) (P༜0.001). The trochanteric fracture group also had lower mean total BMD of both femurs (T-score: -2.74 ± 1.38) than the femoral neck fracture group (-1.73 ± 1.57) (P༜0.05). In the trochanteric fracture group, the BMD of the affected femur (T-score: -2.22 ± 1.49) was higher than that of the healthy femur (T-score: -3.28 ± 1.58) (P༜0.001). In the femoral neck fracture group, the affected femur had higher BMD (T-score: -1.68 ± 1.26) than the healthy femur (T-score: -2.02 ± 1.09) (P༜0.001). The mean BMD of the affected femur was higher than that of the healthy femur in all patients (T-score: -1.88 ± 1.76 vs. -2.66 ± 1.33) (P༜0.001). Patients with trochanteric fractures have lower BMD than those with femoral neck fractures, and should receive treatment for osteoporosis in addition to fracture management. BMD of the healthy femur was lower than that of the affected femur in Patients with proximal femoral fractures, and it is necessary to prevent the occurrence of secondary fractures on the healthy femur.