考虑到活动技术的概念，来自于II I级预后研究提示植入节段更高的活动度与更好的功能结果相关。
Considering motion technology concept issues, data from a level III prognostic study suggest that higher ROM of the implanted segment may be related with better outcomes.
背景资料概述：已经证实，TDR能保存活动度并可能能防止相邻节段的异常负荷。
Summary of Background Data. TDR has been shown to preserve motion and possibly prevent abnormal loading at the adjacent level.
这些问题包括病人淘汰、植入手术的精确性以及保留活动度后改变脊柱节段性退变自然病程的存在证据。
These questions included patient selection issues, surgical accuracy of implantation, and existing evidence that motion preservation alters the natural history of spinal segmental degeneration.
目的探索颈人工椎间盘假体应用于颈椎病患者的手术操作要点和早期治疗效果，观察假体植入后的稳定性和植入节段的活动度。
Objective to investigate clinical effects and manual point with cervical disc prosthesis in patients with cervical spondylosis, to observe the stability and range of movement (ROM) postoperatively.
人工颈椎间盘置换术可在进行脊髓减压并提供稳定的同时保持手术节段颈椎的活动度，为颈椎病的外科治疗开辟了新的途径。
Since the artificial cervical disc replacement can preserve enough motion after neural decompression with adequate stability, it provides a new surgical therapy for cervical spondylosis.
活动度保留对临近节段退变的作用是什么？
What Is the Effect of Motion Preservation on Adjacent Level Degeneration?
植入节段的活动度对术后疗效有影响吗？
结论植入的颈椎人工间盘在一定范围内缓解了相邻节段的应力，且能够恢复颈椎的活动度。
ConclusionsThe implanted artificial cervical disc can appropriately reduce the stress in adjacent vertebral segments, which is beneficial to improve the movement of the cervical spine.
表明颈椎动态稳定器置入后对邻近节段椎体活动度无明显影响或影响甚小，在一定程度上减小假体与其邻近椎体轴向应力，有效地维持颈椎活动。
There was no significant influence for the ROM of the upper and lower cervical segments. To some extent, the DCI diminished the axial stress and maintained the ROM of the cervical spine effectively.
表明颈椎动态稳定器置入后对邻近节段椎体活动度无明显影响或影响甚小，在一定程度上减小假体与其邻近椎体轴向应力，有效地维持颈椎活动。
There was no significant influence for the ROM of the upper and lower cervical segments. To some extent, the DCI diminished the axial stress and maintained the ROM of the cervical spine effectively.
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