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  Indian J Med Microbiol
 

Figure 2: Sagittal CT (a) depicting an OO (arrow) in a 20-year-old female who presented with upper neck pain as well as upper and lower extremity weakness. She had brisk upper and lower extremity reflexes on exam. Sagittal T2 MRI (b) showed increased signal intensity at the level of C1-C2. X-rays (not shown) demonstrated C1-C2 instability. The patient was treated with Posterior C1-C3 fusion with resolution of her preoperative symptoms. Lateral cervical spine X-ray demonstrates the fusion (c). CT - Computed tomography, OO - Os odontoideum, MRI - Magnetic resonance imaging

Figure 2: Sagittal CT (a) depicting an OO (arrow) in a 20-year-old female who presented with upper neck pain as well as upper and lower extremity weakness. She had brisk upper and lower extremity reflexes on exam. Sagittal T2 MRI (b) showed increased signal intensity at the level of C1-C2. X-rays (not shown) demonstrated C1-C2 instability. The patient was treated with Posterior C1-C3 fusion with resolution of her preoperative symptoms. Lateral cervical spine X-ray demonstrates the fusion (c). CT - Computed tomography, OO - Os odontoideum, MRI - Magnetic resonance imaging