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. 2018 Nov 13;19:397. doi: 10.1186/s12891-018-2320-3

Fig. 3.

Fig. 3

External template designed using Mimics software. a A 3D model of the pelvis was reconstructed including the marker pins. b S1 and S2 virtual screws were placed into the sacrum and adjusted to the midway of the osseous corridor without any penetration. c-f The template was designed to connect the marker pins and virtual screws, providing sleeves to attach the template on the marker pins and guide the K-wire to the target corridor. Black arrow indicates the guide sleeve for the anterior column screw. (d/f) The plate is low-profile, minimizing the distance between both template and skin, and marker pins and virtual screws