目的 通过比较不同足底泵使用时长对膝部骨折病人DVT的预防效果，找出适合膝部骨折乃至下肢骨折病人的足底泵 最佳使用时长。方法 将122例膝关节周围骨折的病人随机分为四组：对照组每次使用足底泵30分钟，每日两次；甲 组每日连续使用24h；乙组每日连续使用4h；丙组每次使用2h，每日两次。比较四组病人DVT的发生情况及腿围变 化。结果 乙组相较于甲组，可显著降低下肢DVT的发生率(P<0.05)，四组病人大腿围与小腿围的变化结果显示均有 统计学差异(P<0.05)。结论 增加足底泵使用时长可预防膝部骨折病人DVT的发生并减轻下肢水肿。

Objective By comparing different duration of sole vein pump on deep venous thrombosis of knee joint fracture patients, to find the most suitable duration for knee joint fracture and even lower limb fractures. Methods 122 cases of knee joint fracture patients were randomly divided into 4 groups. Control group, each time for 30 min, twice a day. Group A daily use 24h continuously. Group B daily use 4h continuously. Group C daily use 2h, twice a day. To compare the condition of DVT and leg circumference. Results Group B, compared to group A, could significantly reduce the incidence of DVT (P<0.05). The thigh circumference and calf circumference of 4 groups had a statistically difference(P<0.05). Conclusion Increased the duration of sole vein pump can prevent the occurrence of DVT and reduce the edema of lower limb of knee joint fracture patients.