Fig. 1

A case (no. 9 case in Table 1) in group A. A The patient did prone CT scanning with three markers located at the back skin near the fractured vertebra, the gradienter record the parameters of posture. B1 The reconstruction of the target vertebra in the coronal, transverse, sagittal plane in the MIMICS software, and the model of reconstructed vertebra. B2 The simulation of PVP in the MIMICS. B3 The parameters of guiding cylinders of the template. B4 The real template. C1 Using the gradienter to make sure the patient is in the same position when she did the CT. C2 Final puncture points. C3 Match one template with skin to determine the puncture points. C4 Using puncture needles to double check the puncture points. C5 Fixing the other sterilized template and insert the needles. C6 Tapping the needles to the end of the trajectories. C7–8 Injecting bone cement bilaterally via the needles. D1 One time fluoroscope for skin entry points. D2–6 With confirmation of fluoroscopy views, the needles were gradually tapped through the pedicle. D7 Injection of bone cement. D8 Fluoroscope for the check of the bone cement distribution