Presentation
The patient presented with a back pain. History of a previous spinal fixation.
Patient Data
Age: 65 years
Gender: Male
From the case:
Pedicle screw loosening
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Metallic fixation of the dorso-lumbar spine is noted.
There is lucency surrounding the screw of the right pedicle (halo zone), suggesting loosening.
Case Discussion
X-ray has low sensitivity and high specificity for pedicle screw loosening1.