老年髋部骨折患者的腰椎和股骨近端骨密度的比较

A comparative study between lumbar spine and proximal femur BMD values for hip fractures in elderly

目的通过比较老年髋部骨折患者的腰椎和股骨近端骨密度值，试图找出对于髋部骨折的更具有密切相关性的骨密度测定部位。方法采用双能骨密度仪对102名65岁以上老年髋部骨折患者入院后2周内的脊柱和髋部两个部位骨密度测定，对组间和组内数据分别进行分散分析和t检验的统计学处理。结果髋部的骨密度无论在男性和女性组均比腰椎的骨密度要低，有非常显著差异（P〈0．001）。女性组的髋部及腰椎骨密度要比男性组为低，有非常显著差异（P〈0．001）。无论男性还是女性髋部骨折患者其腰椎的骨密度均无显著下降。结论在老年髋部骨折患者测定股骨近端的骨密度值更能反映其实际骨质疏松情况。

Objective To analyze the values of bone mineral density （BMD） of spinal and proximal femur of hip fractures in elderly, and try to emphasize the location which will be more closed relation with hip fracture and which might be effective in prediction of hip fracture in elderly. Methods A total of 102 subjects over 65 years with hip frac- tures were selected and the BMD both in lumbar 2-4 and total hip were measured by dual energy X-ray absorptiometry （DXA）. Appropriate statistical analysis were performed by StatView 4.5 between lumbar and total hip BMD values. Resuits The values of total hip BMD were significant lower than that in lumbar 2-4 both in men and women group （P 〈 0. 001 ）, and the BMD values both lumbar 2-4 and proximal femur in hip fractures were significant higher in men group than that in women group （ P 〈 0. 001 ）, and the BMD of lumbar spine both in men and women group were not sig- nificant decreased compared with the normal younger ones in the same sex group. Conclusion The BMD measurement of total proximal femur of hip fractures in elderly is more valuable in prediction of hip fracture than that of lumbar BMD measurement.