关键词: 颈椎病, 颈椎前路椎间盘切除融合术, 可变角度零切迹椎间融合器, 钛板椎间融合器, 影像学指标

Abstract:

Objective To analyze the application value of variable-angle zero-profile interbody fusion cage （Zero-PVA） and titanium plate fusion cage （CP） in anterior cervical discectomy and fusion （ACDF） for single-level cervical spondylosis based on imaging indicators. Methods Clinical data of 204 patients with single-level cervical spondylosis who underwent ACDF in our hospital from January 2021 to September 2025 were retrospectively collected. Based on the type of cage utilized during the surgery， the patients were divided into the Zero-PVA group （n = 101） and the CP group （n = 103）. Perioperative indicators， imaging indicators， Bridwell grades of interbody fusion， Japanese Orthopaedic Association （JOA） scores， Neck Disability Index （NDI）， and complications within 3 months after the operation were compared between the two groups. Results The Zero-PVA group exhibited less intraoperative blood loss and a shorter hospital stay compared to the CP group （P < 0.05）. At 1 week and 3 months post-operation， the cervical lordosis angle， the height of the fusion segment， the Cobb angle of the fusion segment， and the Cobb angle of C_2-7 in both groups increased when compared to the preoperative values （P < 0.05）. At both time points， the Cobb angle of the fusion segment in the Zero-PVA group was larger than that in the CP group （P < 0.05）. At 3 months post-operation， there was a statistically significant difference in the Bridwell grades of interbody fusion between the two groups （P < 0.05）. At 3 months post-operation， the JOA scores increased and the NDI decreased in both groups compared to the preoperative values （P < 0.05）， but no significant differences were found in the JOA scores or NDI between the two groups either before or after the surgery （P > 0.05）. The postoperative complication rate in the Zero-PVA group was lower than that in the CP group （P < 0.05）. Conclusions In ACDF for single-level cervical spondylosis， both Zero-PVA and CP can effectively enhance the cervical function of patients. Nevertheless， Zero-PVA is more effective in minimizing intraoperative trauma， improving the Cobb angle of the fusion segment， facilitating bone fusion， and reducing the risk of postoperative complications.

Key words: cervical spondylosis, anterior cervical discectomy and fusion, variable-angle zero-profile interbody fusion cage, titanium plate interbody fusion cage, imaging indicators