• Ryan Wing-Yuk Chan, Yung-Hsiao Chiang, Yi-An Yang, Yi-Yu Chen, and Yi-Syue Tsou.
• Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan; Taipei Neuroscience Institute, Taipei Medical University, Taipei, Taiwan; Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.
• World Neurosurg. 2024 Mar 1; 183: e276e281e276-e281.

BackgroundThough previous studies have documented various clinical outcomes after cervical arthroplasty for degenerative cervical disc disease, none of them reported the impact of cervical arthroplasty on severe cervical disc degeneration (CDD).MethodsThis retrospective cohort study included severe 40 CDD (C3-C7) patients who underwent single-level cervical arthroplasty using ProDisc-C between January 2017 and December 2019. After surgical intervention, the range of motion (ROM) was determined, whereas clinical outcomes were measured in terms of the Visual Analogue Scale (VAS) and Neck Disability Index (NDI) to evaluate neck pain and disability, respectively.ResultsCompared to the mean preoperative ROM (6.57 ± 4.85°), the cervical dynamic ROM was increased 3 months after cervical arthroplasty, and the increment was maintained for at least 1 year. The increased ROM is attributed to the extension and not flexion components. The mean preoperative ROM of 6.57 ± 4.85° significantly increased to 11.67 ± 4.98° (P = 0.0005), 10.05 ± 5.18° (P = 0.0426) and 10.46 ± 4.73° (P = 0.0247) after 3 months, 6 months and 1 year, respectively. The extension ROM also revealed a similar trend. VAS for neck and arm decreased from 7.4 and 6.6 to 1.4 and 1.2, respectively. Consistently, the preoperative mean Neck Disability Index (NDI) score of 27.6 decreased to 14.6. We recorded a case of device subsidence, but without extrusion.ConclusionsCervical arthroplasty can improve clinical outcomes and restore ROM in severe CDD patients.Copyright © 2023 Elsevier Inc. All rights reserved.

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