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Accuracy of freehand fluoroscopy-guided placement of C1 lateral mass and C2 isthmic screws in atlanto-axial instability

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Academic year: 2021

Partager "Accuracy of freehand fluoroscopy-guided placement of C1 lateral mass and C2 isthmic screws in atlanto-axial instability"

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Figure

Fig. 1 Os odontoideum. a MR image showing an os  odontoi-deum with a high cervical spinal cord hypersignal
Fig. 2 Old non-healed type II odontoid fracture. a MR image showing an old non-healed type II odontoid fracture with fusion between the anterior C1 arch and the bony fragment

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