骨折愈合过程中骨痂骨密度的定量分析

Research of Quantitative Measure of BMD in Callus by using Dual-Energy X-ray Absorptionmetry

目的 :应用双能X线骨密度测定仪 (DEXA)观察骨折愈合过程中骨痂的骨密度变化 ,说明临床测定骨折愈合程度的方法。方法 :对 171例前臂骨折在正常愈合过程中骨折端区及其相邻两侧非骨折区骨矿物密度 (BMD)变化 ,将结果进行自身对照研究。结果 :在整个观察期内 ,骨折区BMD值呈显著上升趋势 (P <0 .0 1)。结论 :DEXA对骨折端的BMD跟踪测定可客观准确地反映骨折端骨痂生长状况 。

Objective:To find the clinical significance and value by using Dual Energy X ray Absorptionmetry (DEXA)as a quantitative measure of callus.Quantitative analysis of BMD provided a new method of judging fracture healing.Methods:The fracture site and neighbouring proximal and distal areas were measured periodically by DEXA in 171 cases of forearm fracture,which followed by self contrast study on the result.Results:Bone Mineral Density (BMD)in fracture area elevated significantly ( P <0.01)during the whole observation period while that in contrast groups descended obviously(the area in distal end P <0.05).Conclusions:It implied that tracing test of BMD with DEXA at fracture ends could reflect accurately the state of fracture healing.