In order to solve above technical problems, the invention provides a
navigation system used for shaft fracture intramedullary reduction. The
system comprises a marrow cavity
endoscope, an
image display module, a computer, an electromechanical control module, and a
mechanical traction frame. The
image display module is electrically connected between the marrow cavity
endoscope and the computer. The electromechanical control module is electrically connected between the
mechanical traction frame and the computer. The marrow cavity
endoscope acquires image signals of proper positions, and transmits the image data to the computer through the
image display module. After the image data is displayed, analyzed and processed on the computer, a displacement instruction is transmitted to the electromechanical control module. The electromechanical control module drives the
mechanical traction frame to complete corresponding displacement operation. The
system is characterized in that operation is simple, axial alignment and rotation alignment are realized, X-
ray radiation damages are prevented, the
system monitors reduction state in real time, and is high in precision, and can maintain a satisfied closed reduction state for a long time.