Vanninen R, Manninen H, Soimakallio S, Katila T, Suomalainen O
Department of Diagnostic Radiology, Kuopio University Hospital, Finland.
Br J Radiol. 1993 Mar;66(783):199-202. doi: 10.1259/0007-1285-66-783-199.
Patients who have recently undergone total knee arthroplasty are at high risk of developing deep venous thrombosis (DVT) in the calf. The clinical diagnosis of DVT is difficult in these patients owing to recent operation. A combination of compression ultrasonography (US) and colour flow imaging was used as a screening method of asymptomatic DVT in 51 patients who had undergone total knee replacement surgery. Both limbs were examined by US from the common femoral vein to the ankle approximately 7 days after operation and the results were compared with bilateral venography. 12 patients (24%) developed infrapopliteal DVT on the operated side, in two cases the thrombosis extended to the lower part of popliteal vein. One patient had bilateral thrombosis. US showed sensitivity of 77%, specificity of 96% and overall accuracy of 93%. US seems to be a useful screening method for DVT after knee replacement operation.
近期接受全膝关节置换术的患者小腿发生深静脉血栓形成（DVT）的风险很高。由于近期手术，这些患者的DVT临床诊断困难。对51例接受全膝关节置换手术的患者，采用压迫超声检查（US）和彩色血流成像相结合的方法作为无症状DVT的筛查手段。术后约7天对双下肢从股总静脉至踝关节进行超声检查，并将结果与双侧静脉造影进行比较。12例（24%）手术侧发生腘静脉以下DVT，2例血栓延伸至腘静脉下部。1例患者双侧血栓形成。超声检查显示敏感性为77%，特异性为96%，总体准确率为93%。超声似乎是膝关节置换术后DVT的一种有用筛查方法。
