Abstract:

Fractures of the posterior ring of the pelvis, as Tile B and Tile C pelvic fractures, need surgical treatment for unstable pelvic fractures. As an effective treatment, minimally invasive sacroiliac screw fixation has been widely used in clinic because of its low risk of infection, less blood loss, less invasion and early functional exercise after operation. However, according to the biomechanical characteristics of sacroiliac screw internal fixation, there is still controversy about the number of screws, the segment of sacroiliac screw placement and whether to use sacroiliac penetrating screw. At the same time, a variety of auxiliary nail placement techniques have been carried out in orthopedic surgery, which have improved the safety and accuracy of nail placement, and have been widely used in clinic, but different auxiliary techniques are still inadequate. The research progress of sacroiliac screw in the treatment of posterior pelvic ring fracture and auxiliary nail placement are summarized as follows.

Key words: Sacroiliac screw, Pelvis, Fractures, Orthopedic robot, 3D printing technology