Abstract:

BACKGROUND: The patients with knee trauma received the 64-slice spiral CT examination after the X-ray examination, and there still some differences on the choice of the post-processing technology in clinic according to the injury and reconstruction needs.
OBJECTIVE: To investigate application value of 64-slice spiral CT and the post-processing technology in the knee injury.
METHODS: The imaging data of the X-ray and 64-slice spiral CT of the 79 patients with knee injury were retrospectively analyzed, the post-processing technology, such as the multiple planar reformation, volume rendering and shaded surface display were adopted and combined with the image of the original bone and soft tissue window, and the images were dealt by two or more experienced X-ray and orthopaedic surgeons with double-blind analysis and compared with the clinical and operation results .
RESULTS AND CONCLUSION: In all the 79 patients with knee injury, there were a total of 92 fractures. Ordinary X-ray diagnosis showed 68 cases of 82 fractures, except one false positive and five false negative, the detection rate was about 89%; after the 64-slice spiral CT and three-dimensional reconstruction, 79 cases of 92 fractures were diagnosed, the detection rate was 100%. Compared with the X-ray examination, the 64-slice spiral CT and the many kinds of reconstruct technique are important auxiliary examination methods of the knee injury, and they can further identify whether there are secretiveness fracture, micro fractures, dislocation and soft tissue injury around the knee joint.