Minimally Invasive Spinal Fusion (MIS) surgery involves the fixation of the spine with minimal damage to the surrounding muscle, tendons, and the surface of the skin. This procedure starts with the placement of a jamshidi needle, a hollow cannula with a needle insert, into the pedicle. The insert is removed exposing the hollow cannula. A guide wire is placed through the cannula into the vertebral body and advanced to the desired depth through fluoroscopy guidance. The jamshidi is then removed and a cannulated tap is placed on the guide wire. Through fluoroscopy, the surgeon advances the tap to the desired depth and removes the tap. A cannulated pedicle screw is placed on the guide wire and advanced. This is repeated at each level of desired fixation. Once all pedicle screws are in place a rod is placed through the pedicle screw tulips and is locked in place with set screws. This surgery can also be done using a cannulated dilating tube system.
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