Fig. 3From: Cervical arthroplasty with ROTAIO® cervical disc prosthesis: first clinical and radiographic outcome analysis in a multicenter prospective trialFlexion (a), neutral (b) and extension (c) x-ray showing an immobilized ROTAIO cervical disc prosthesis due to heterotopic ossification at the level C6-C7 in a 48 years old female patient, 12 month after implantationBack to article page