股骨颈骨密度和股骨颈轴长与老年髋部骨折的关系

Relationship of bone mineral density and axis length of femoral neck with hip fracture in the aged

目的探讨股骨颈骨密度、股骨颈轴长与髋部骨折的关系 ,了解股骨颈骨密度、股骨颈轴长预测髋部骨折的能力。方法通过双能X线吸收骨密度测量仪测量髋部骨折组患者和同龄男女非骨折对照组的股骨颈轴长、股骨颈骨密度 ,分析比较两种测量指标预测股骨颈骨折的敏感性。结果不同性别骨折组患者的股骨颈骨密度均明显低于同年龄、同性别对照组,差异有非常显著性意义 (P<0.01) ,而骨折组与非骨折组男女股骨颈轴长间差异无显著性意义 (P>0.05)。多元直线回归分析发现骨折发病率仅与股骨颈骨密度有关。结论股骨颈骨密度值可以预测股骨颈骨折的发生 ,而股骨颈轴长与股骨颈骨折的发生无关。

Objective To investigate the relationship between bone mineral density (BMD) and the femoral neck axis length (FNAL) with the hip fractures. Methods One hunderd and six patients with femoral neck fracture and another 110 age matched volunteers were selected to measure bone mineral density and axis length of the femoral neck by dual energy X-ray absorptiometry, they included 70 women aged from 60 to 83(averaged 69±9.0 years), 36 men aged from 60 to 93 (averaged 71±9.3 years). An age matched group included 70 women and 40 men were selected to measure bone mineral density of femoral neck and femoral neck axis length by dual energy X-ray absorptiometry. Results The bone mineral density of fracture neck in the fracture group is significantly lower than age matched group (P< 0.01), but there was no difference in FNAL between two groups (P >0.05),the hip fracture rate only correlate with BMD of femoral neck. Conclusion BMD of femoral neck has a close relationship with hip fracture risk, however FNAL appears to have no value for the prediction of hip fracture.