Conclusion: The fracture of floating knee is a kind of severe unstable injury and it must be an effective method to treat it with locked intramedullary nail and CPM.

• 结论：创伤性浮膝是一种重度不稳定损伤，在治疗中采取交锁髓内钉内固定并结合CPM，是一种较为有效的方法。但是总体疗效有待进一步观察。