Fig. 5.

Postoperative lateral radiograph of cervical spine showed anterior discectomy and implantation of prosthesis at C5-6 (A). Lateral radiograph of 4-month follow-up showed anterior soft tissue swelling (white arrows) and severe subsidence and retropulsion of prosthesis (B). Magnetic resonance imaging showed anterior abscess formation (white arrows) of C4-7 (C). Lateral radiograph of 2-year follow-up showed anterior removal of prosthesis, decompression and solid fusion, and posterior fixation at C5-6 (D).