Vertebral Tumor Model and RFA

Two Bama miniature pigs were used to make vertebral tumor models. First, an electric grinding drill was used to grind along L1, L3, and L5 pedicle direction, and a quasi-circular cavity with a diameter of about 1.7cm was ground in the upper 1/3 of the vertebra to ensure the integrity of the surrounding bone. The adjacent erector spinae muscle was separated to form the adjacent muscle flap with blood supply, which was filled in the vertebra to construct the vertebral tumor model. RFA was performed on the vertebral tumor model. The ablation parameters were set as power 35W, temperature 70°C, needle length 1cm, and ablation time 20 minutes. Temperature measurement points were arranged in the spinal canal (posterior cortex of vertebra near spinal cord), nerve root foramen, and anterior edge of vertebral body, and thermocouples were used to monitor the temperature in real time.