退行性椎体滑移是腰椎活动节段长时间节段间不稳定的结果。
Degenerative spondylolisthesis is the result of longstanding intersegmental instability at the lumbar motion segment.
结论：单边控制椎间关节活动降低生长板高度、细胞大小和椎间盘高度。
Conclusions: Unilateral control of intervertebral joint motion decreased growth plate height, cell size, and disc height.
接受椎间融合术的小孩患者在长期随访中显示出良好的颈部形态和保留了邻近节段的正常活动。
Children who received a vertebral interbody fusion can show, at long period follow-up, normal shape of the neck, with maintenance of the normal motion of the adjacent segments.
设想的DCA的优点包括抗压强度和颈椎椎体相近，这可以减少移植物活动的可能性。
Purported advantages of DCA include compressive strength similar to that of cervical vertebrae, which may lessen the likelihood of graft pistoning.
运用颈椎周围不同肌肉对颈椎作用力的变化，模拟正常活动范围内颈椎前屈、后伸、侧屈、旋转等多种工况。分别计算并得出相应载荷下钩椎关节、小关节应力值。
With the changing of muscular force, the movements such as flexion, extension, lateroversion and rotation were imitated, and the stress was calculated under different loads, respectively.
每个椎体的后方有两个关节突关节，将脊柱的骨头连接起来，同时允许少量的活动。
There are two facet joints on the back of each vertebra that connect the bones of the spine and allow for a small amount of movement.
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.
应用联合影像学技术模拟椎体屈伸、左右侧屈、左右旋转运动时的活动度。
Motions were reproduced with use of the combined imaging technique during flexion-extension, left-to-right bending, and left-to-right twisting movements.
前路腰椎椎体间融合术，简称ALIF，被设计用于阻止引起症状的脊柱节段的活动。
An anterior lumbar interbody fusion, called a ALIF, is designed to stop the motion at the symptomatic segment of the 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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