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. 2016 Jan 12;17:11. doi: 10.1186/s12891-016-0880-7

Fig. 4.

Fig. 4

X-ray in neutral position (a: lateral view; b: anterior view) showing an undersized and too ventrally positioned ROTAIO cervical disc prosthesis at the level C5-C6 (white arrows) in a 38 years old male patient, 3 month after implantation. Within the first 12 month of follow up the patient suffered from progressive neck pain