Hypermobile cervical disc arthroplasty: clinical and radiological outcomes at minimum 2-year follow-up.
OBJECTIVE Cervical disc arthroplasty (CDA) plays a pivotal role in preserving segmental motion at the index level to mitigate adjacent segment degeneration (ASD) and maintain neck mobility. The long-term results of US Investigational Device Exemption trials spanning a decade have consistently shown positive clinical ou...