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case_images: Preoperative MRI. Sagittal (A) and axial (B) MRI scans revealed a C6-C7 disc herniation resulting in compression of the left C-7 nerve root (arrow).
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case_images: T2-weighted magnetic resonance imaging scans of the cervical spine revealed disc herniation at the C6-C7 levels resulting in compression of the left C-7 nerve root (Figure 1).
case_images: Intraoperative fluoroscopy. A prosthesis cervical disc device was implanted at C6-C7.
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case_images: Subsequently, a prosthesis cervical disc device (PRESTIGE disc prosthesis; Medtronic Sofamor Danek) was implanted at the C6-C7 level (Figure 2).
case_images: Plain radiographs obtained 4 years postoperatively. Lateral (A) imagings showed a complete radiographic fusion of the C6-C7 level with trabecular bone bridging surrounding the cervical disc prosthesis (arrows). No motion of C6-C7 was observed on flexion (B) and extension (C) imagings.
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case_images: Plain radiographs indicated complete osseous fusion of the C6-C7 levels with trabecular bone bridging surrounding the cervical disc prosthesis, and dynamic imaging showed no motion (Figure 3), which was further confirmed by computed tomography (CT) (Figure 4).
case_images: Computed tomography confirmed the cervical disc prosthesis was surrounded bone bridging (arrows).
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case_images: Plain radiographs indicated complete osseous fusion of the C6-C7 levels with trabecular bone bridging surrounding the cervical disc prosthesis, and dynamic imaging showed no motion (Figure 3), which was further confirmed by computed tomography (CT) (Figure 4).