Anterior Cervical Fusion Using a Zero-Profile Stand- Alone Cage: Radiological and Clinical Outcomes after More than 2 Years of Follow-Up (Zero-profile 단독 케이지를 이용한 경추 전방 유합술 - 2년 이상 방사선학적, 임상적 추시 결과 -)

Chang Han (장한); Byung-Wan Choi (최병완)

Anterior Cervical Fusion Using a Zero-Profile Stand- Alone Cage: Radiological and Clinical Outcomes after More than 2 Years of Follow-Up

Journal of Korean Society of Spine Surgery
Abbr : J Kor Spine Sur
2016, 23(3), pp.146-153
Publisher : Korean Society Of Spine Surgery
Research Area : Medicine and Pharmacy > Orthopedic Surgery

Chang Han ¹, Byung-Wan Choi ²

¹부산고려병원 정형외과
²인제대학교

Accredited

ABSTRACT

Study Design: Retrospective analysis. Objectives: To analyze the usefulness of Zero-P® by analyzing the radiological and clinical outcomes with a minimum of 2 years of follow-up. Summary of Literature Review: Anterior discectomy and fusion (ACDF) using Zero-P® showed excellent results. However, there is a lack of studies focusing on long-term outcomes. Materials and Methods: Ninety-eight patients who underwent single-level ACDF using Zero-P® with more than 2 years of follow-up were included for analysis. In the radiological analysis, we evaluated disc height, segmental lordosis, and subsidence in the preoperative, postoperative, and last follow-up periods. The Neck Disability Index (NDI), Neck Visual Analogue Scale (VAS), and Arm VAS were also evaluated for clinical assessment. Radiological bony fusion was assessed, and radiological and clinical differences according to bony fusion were evaluated. Results: Intervertebral disc height had increased 2.92 mm after surgery and subsided to 2.36 mm at the final follow-up. Subsidence of the screw was 0.58 mm at final follow-up. Segmental lordosis was 3.97° at the preoperative assessment, 8.39° in the postoperative follow-up, and 5.83° in the last follow-up. The Neck VAS score was 4.47, 2.28, and 1.27, respectively. The Arm VAS score was 5.73, 3.13, and 2.18; and NDI score was 17.8, 11.7, and 7.89, respectively. There was no association between the radiological and clinical results. Radiological nonunion was found in 18 subjects. There were no significant differences in radiological and clinical parameters according to bony union. Conclusions: ACDF with Zero-P® for treatment of degenerative cervical disease showed subsidence in 55.1% and nonunion in 18% of cases. However, the radiological results were not related to the clinical results.

KEYWORDS

Cervical spine, Anterior fusion, Zero-P®, Subsidence, Nonunion

Citation status

* References for papers published after 2023 are currently being built.

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