● TheGuidance System is easy to use, with precise position and orientation, whichcan shorten the procedure time to implant the posterior column screws. TheGuidance System is applicable for primary hospitals.

● Twosurfaces of the guide template shall separately attach closely to the pelvicbrim and quadrilateral surface, the posterior end of the guide template shallattach closely to the sacroiliac joint.

● Reduceanatomically the posterior column in all efforts, as the clinical effects wouldbe affected directly if the reduction were not achieved well.

● Guidancetemplate technically improved is more stable in positioning, with additionalfunction in reduction of the posterior column, which leads to easier reduction.