踝部骨密度在人工踝关节置换后改变(6例3年连续观察结果)  

Change regulatives of bone mineral density after total ankle arthroplasty:six cases results in connective three years

作　　者：毛宾尧[1] 应忠追[1] 李新春[1] 司全明[1] 王岱生[1] 

机构地区：[1]宁波大学附属宁波第一医院骨科宁波市骨科研究所,315010

出　　处：《中国矫形外科杂志》2009年第23期1789-1791,共3页Orthopedic Journal of China

摘　　要：[目的]研究人工踝关节置换后骨密度（bone mineral density,BMD）改变。[方法]采用LunerDPX-L型双能X线骨密度仪（DEX-A）,以健侧和患侧术前BMD为对照,对6例（男5,女1）人工踝关节置换后6、12个月、2年和3年分别测量BMD改变和观察骨小梁生长情况。获得数据经SPSS软件行统计学分析。[结果]术后1.5-2年X线片显示骨小梁长入假体微孔,BMD术后第3年达到峰值,平均（1.155±0.210）g/cm^2。术后6个月平均BMD（0.854±0.217）g/cm^2,12个月（0.975±0.142）g/cm^2,2年（0.956±0.213）g/cm^2,3年（1.155±0.210）g/cm^2,P〈0.05。[结论]术后1.5-2年X线片示骨小梁出现、增加,并密集长入假体微孔,BMD逐年增高,第3年达到峰值[（平均1.155±0.210）g/cm^2]。[Objective] To study the change regulatives of BMD（bone mineral density）in after total ankle arthroplasty.[Methods]From Oct.1997 to Dec.2004,the BMD of the subjects were measured to involve in the study.There were 6 cases（5 male,1 female）with an average of 54.4 years old.Their BMD of the subjects was measured by DEX-A（Lunar）at the tibia and talus of the ankle post-arthroplasty in 6 months,12 months,2 years and 3 years postoperatively.All data were saved in computer and all statistical analyses were performed uaing SPSS 8.0 system in personal computer.[Results]The bone trabecula growing into micropore coated of the prosthesis has been showed on radiograth post-surgeryat average period of 1.5 years to 2 years.In the third year itreached bone mass at the distal tibia and talus of the total ankle replacement,which mean BMD 0.854±0.217 at post operative 6 months,BMD 0.975±0.142 at post operative 12 months,BMD 0.956±0.213 at post operative 2 years,and 1.155±0.210 at 3 years（P〈0.05）.BMD reached peak bone mass at 3 years.[Conclusion]Bone trabecula growing into micropore coated of the ankle prosthesis has been showed on radiographat post operative average period 18 to 24 months.And BMD gradul increased in following three years period,and reached peak bone mass（mean 1.155＋0.210）in the third year post-operatively.

关 键 词：骨密度 人工踝关节置换 双能X线骨密度仪 

分 类 号：R687.4[医药卫生—骨科学]