下肢骨折并发深静脉血栓的早期诊断

深静脉血栓（Deep vein thrombosis,DVT）是骨科临床最常见的严重并发症,可引起致命性肺栓塞风险。传统理论认为血液高凝状态、静脉血流缓慢及血管壁损伤是DVT形成的主要原因,近期研究证实基因缺陷、炎症因子等因素亦促使DVT的形成。目前诊断DVT主要依靠超声显像及深静脉造影技术（DAS）和磁共振（MRI）增强血管造影,D-二聚体（D-dimer）、C-反应蛋白（CRP）、白细胞介素类等特异性化验指标及基因检测等亦可用于DVT的筛选。

Early diagnosis to the deep venous thrombosis in lower limb fracture

Deep vein thrombosis(DVT) is the most common orthopaedic clinic serious complication,and cause fatal pulmonary embolism risk.Traditional theories that hypercoagulability of vein blood,blood slow slowly and hemal wall damage are the main reasons.Recent studies confirm a genetic defect and inflammatory factor also participate the formation of DVT.At present,diagnosis of DVT mainly depends on the ultrasonography,DSA and magnetic resonance imaging(MRI),strengthen angiography,D-dimer,c-reactive protein.