Distraction device in knee joint replacement

The invention relates to the technical field of distraction devices in knee joint replacement, in particular to a distraction device in knee joint replacement, which comprises distraction structures,a transmission structure, telescopic structures, a supporting structure, a driving structure and a limiting structure, wherein the supporting structure is arranged at the bottom end of a driving structure used for manual driving, the transmission structure is arranged in the supporting structure in a rotating connection mode, and the transmission structure is connected to the driving structure. The two ends of the transmission structure are connected to the telescopic structures used for adjusting the distraction distance, and the telescopic structures are connected to the supporting structure. Distraction structures used for distracting are arranged at the opposite ends of the two telescopic structures. The telescopic structures are matched with the supporting structure, so that the spaceutilization efficiency is