INCIDENCE OF DEEP VEIN THROMBOSIS IN FLOATING KNEE

ABSTRACT Objective: To report the incidence of deep vein thrombosis (DVT) in ipsilateral femur and tibial fractures (floating knee). Methods: This is a retrospective, analytical, observational study conducted with the medical records of thirty patients admitted to a trauma hospital between October 2016 and July 2017 with floating knee. Results: Patients aged between 21-30 years were the most affected by the condition (36%). Seventeen patients affected the dominant limb (57%); 19 (63%) patients were classified as Fraser type I, 18 (60%) had open (compound) fractures, 16 (53%) tibial fractures, and 8 (26%) femoral fractures. External fixation of the femur and tibia (25 patients = 83%) was the most common emergency treatment. In total, 17% of patients presented deep venous thrombosis (p = 0.409). Conclusion: Despite antithrombotic prophylaxis, the incidence of DVT in the affected limb of patients with floating knee was high. We found patients with Fraser I fractures, male, and with fractures in the non-dominant limb to present a higher chance of developing DVT. Level of Evidence III, Comparative retrospective study .

摘要
研究目的：报告同侧股骨与胫骨联合骨折（漂浮膝，floating knee）患者的深静脉血栓形成（deep vein thrombosis, DVT）发生率。
方法：本研究为一项回顾性、分析性、观察性研究，纳入2016年10月至2017年7月期间某创伤医院收治的30例漂浮膝患者的病历资料进行分析。
结果：21~30岁年龄段患者为该病症的高发人群（占比36%）；17例患者累及优势肢体（占比57%）；19例（63%）患者被归类为Fraser I型骨折；18例（60%）为开放性（复合性）骨折；16例（53%）为胫骨骨折，8例（26%）为股骨骨折。股骨与胫骨外固定术（25例，占比83%）是最常用的急诊治疗手段。总体而言，17%的患者出现深静脉血栓形成（p=0.409）。
结论：尽管实施了抗血栓预防措施，漂浮膝患者患肢的深静脉血栓形成发生率仍较高。本研究发现，Fraser I型骨折、男性以及非优势肢体骨折的患者发生深静脉血栓形成的风险更高。
证据等级：III级，回顾性对比研究。