目的：介绍以计算机立体视觉为模型建立的颈椎活动度精确测量系统。
Objective: To introduce the system of accurately measuring the range of motion (ROM) of cervical spine with computer stereovision model.
组间比较两组1个月随访时在颈椎前屈、左屈、右屈、左旋、右旋5个方向的活动度变化值均有统计学意义（P<0.05）。
Compared between groups, cervical anteflexion, left and right lateral bending, left and right rotative activity showed significant difference at the 1 month after treatment(P<0.05).
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.
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.
颈椎总活动度的改变与神经功能的改善无相关性。
There was no relationship between the change of ROM and the improvement of neurological functions.
目的探索一种测量颈椎曲度和活动度的新方法以及分析颈椎退变的放射学特征。
Objective to provide a new method for measuring cervical spine curvature and the range of flexion-extension and to analyse the radiographic features of the cervical degeneration.
颈椎在各个方向上有很大范围的活动度，这是由肌肉、韧带、肌腱等复杂的结构来支持的。
The cervical spine has a wide range of motion in all directions. This motion is supported by a complex structure of muscles, ligaments, and tendons.
当椎板切除术累及高应力部位(颈2或颈7)，术前存在颈椎序列变化，小关节受累等可能影响术后颈椎曲度与活动度。
With preoperative cervical sequence changes, high-stress position (C2 or C7) and small joint involved, the postoperative cervical alignment and rang of motion may be affected.
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.
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.
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.
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