Fig. 3

Male, 46 years old, a fall injury. a–d 3D CT reconstruction, coronal, sagittal and axial views after admission showing a type “H” sacral fracture associated with pubic superior and inferior rami fractures. e, f Planning of trajectories on bilateral L5 pedicle screws and bilateral S1 iliosacral screws. g Percutaneous pedicle screw implantation. h All sutured incisions. i Postoperative radiograph revealing bilateral triangular osteosynthesis for sacral fractures. j–l Postoperative CT views showing screws with good position. m Anteroposterior pelvic X-ray at one year after surgery demonstrating fracture healing