Fig. 3

Each surgical guide template was tightly attached to the corresponding bone surface a; while an assistant helped to stabilize the specimen and the guide template, the surgeon used a drill bit to slowly drill along the axis of the screw path. After drilling for 20 mm–30 mm, a spherical probe was used to detect whether the screw path was complete. A tap drill was used for tapping, and the screws were placed b; the same method was used to place each screw c