双能X线吸收法检测儿童上肢骨折的骨密度及其意义  

Role and significance of dual-energy X-ray absorptiometry in measurement of bone mineral densi- ty in children with upper extremity fractures

作　　者：韦溦[1] 杨星华[1] 刘洋[1] 韦继刚 陈辉[1] 郭元[1] 

机构地区：[1]解放军第三二四医院创伤显微外科,重庆400020

出　　处：《中华创伤杂志》2014年第1期41-43,共3页Chinese Journal of Trauma

基　　金：中国博士后科学基金面上资助项目（201150M1573）

摘　　要：目的探讨双能X线吸收法检测儿童上肢骨折的骨密度及其意义。方法选取2009年1—12月体检的8—14岁儿童864例，采用双能X线骨密度测试仪检测左桡骨骨密度Z值，根据Z值大小进行分组观察Z值与骨折的关系；根据年龄分组观察年龄与骨折的关系。结果864例患者中获得2年随访831例，失随访33例。Z值结果显示，Z值≤-2者66例，Z值〉-2者765例。Z值≤～2组儿童骨折发生率为27．27％，Z值〉-2组骨折发生率为5．49％，两组比较差异有统计学意义（P〈0．01）；8—10岁组儿童骨折发生率为10．83％，11-14岁组骨折发生率为5．03％，两组比较差异有统计学意义（P〈0．01）。结论骨密度与儿童上肢骨折密切相关，并随年龄增长骨密度不断增加，通过早期应用双能X线吸收法检测骨密度是预防儿童骨折的有效一级预防手段。Objective To measure the bone mineral density in children with dual-energy X-ray absorptiometry and examine the relevance of bone mineral density with the risk of pediatric upper limb fracture. Methods A total of 864 children （ 8-14 years of age） admitted into our hospital in 2009 were involved in the study. The bone mass density （Z score） at the left radius was measured using dual-energy X-ray absorptiometry. Children were grouped according to their Z score and age to observe correlations of Z value and age with the incidence of fractures. Results Thirty-three children were lost to follow-up. For the other 831 children, the mean duration of follow-up was 2 years. Z sore was ≤ -2 in 66 children and 〉 -2 in 765 children. There was significant difference in fracture incidence between children with Z score of ≤ - 2 and 〉 - 2 （27.27% vs 5.49% , P 〈 0.01 ）. Furthermore, fracture incidence in children at age group of 8-10 years and 11-14 years revealed significant difference （ 10.83% vs 5.03% , P 〈 0.01 ）. Conclusions Bone mineral density is closely related to upper limb fracture in children and in- creases with aging. Early application of dual-energy X-ray absorptiometry to detect the bone density is an effective primary measure for prevention of fractures in children.

关 键 词：骨密度 上肢 儿童 

分 类 号：R726.8[医药卫生—儿科]