Spinal fusion refers to the surgical fusion of one or more spinal segments. Spinal fusion can be performed in the cervical, thoracic, and lumbar Spine.
Screw loosening
The Pedicle screws used in spinal fusion may loosen over time and lose their fixation. Screw loosening can be diagnosed using a CT scan, which shows a Hypodense rim around the screw.
EnlargeAxial CT of loosened bilateral S1 pedicle screws. A hypodense halo is seen around the pedicle screws, suggestive of loosening of the screw hardware.
Imaging
EnlargeX-ray image of a long-segment spinal fusion.EnlargeLateral radiograph showing posterior cervical fusion between the third and sixth cervical vertebrae.
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