3-DIMENSIONAL MOVEMENTS OF THE UPPER CERVICAL-SPINE
3-DIMENSIONAL MOVEMENTS OF THE UPPER CERVICAL-SPINE
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DOI：
10.1097/00007632-198807000-00003
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发表时间：
1988-07-01
期刊：
影响因子：
3
通讯作者：
BUEFF, HU
中科院分区：
文献类型：
--
作者：
PANJABI, M;DVORAK, J;BUEFF, HU
了解枕-寰-枢关节复合体的正常运动对于评估可能不稳定的临床病例是很重要的。本体外研究的目的是定量测定枕骨-C1和C1-C2关节的三维运动。研究了10具新鲜尸体的整个颈椎标本（枕骨至C7），使用成熟的技术记录屈曲、伸展、左右侧弯和左右轴向旋转的运动。递增施加最大1.5 Nm的纯力矩，并使用立体摄影测量法记录骨骼的三维运动。每个力矩单独施加，并在三个加载/卸载循环中施加。在第三个负载循环时进行运动测量。计算中性区、弹性区和活动范围的参数。屈曲/伸展、右/左侧弯和右/左轴向旋转的中性区分别为：1.1、1.5和1.6度（枕骨-C1）; 3.2、1.2和29.6度（C1-C2）。屈曲、伸展、侧弯（一侧）和轴向旋转（一侧）的运动范围分别为：3.5、21.0、5.5和7.2度（枕骨-C1关节）和11.5、10.9、6.7和38.9度（C1-C2关节）。脊柱中最大的椎间运动是C1-C2关节的轴向旋转，中性区占该运动的75%。
Knowledge of the normal movements of the occipito-atlanto-axial joint complex is important for evaluating clinical cases that may be potentially unstable. The purpose of this In vitro study was to quantitatively determine three dimensional movements of the occiput-C1 and C1-C2 joints. Ten fresh cadaveric whole cervical spine specimens (occiput to C7) were studied, using well-established techniques to document the movements in flexion, extension, left and right lateral bending, and left and right axial rotation. Pure moments of a maximum of 1.5 Nm were applied incrementally, and three-dimensional movements of the bones were recorded using stereophotogrammetry. Each moment was applied individually and in three load/unload cycles. The motion measurements were made on the third load cycle. Parameters of neutral zone, elastic zone, and range of motion were computed. Neutral zones for flexion/extension, right/left lateral bending, and right/left axial rotation were, respectively: 1.1, 1.5, and 1.6 (occiput-C1); and 3.2, 1.2, and 29.6 degrees (C1-C2). Ranges of motion for flexion, extension, lateral bending (one side), and axial rotation (one side) were, respectively: 3.5, 21.0, 5.5, and 7.2 degrees (occiput-C1 joint) and 11.5, 10.9, 6.7, and 38.9 degrees (C1-C2 joint). The greatest intervertebral motion in the spine was axial rotation at the C1-C2 joint, with the neutral zone constituting 75% of this motion.