ANATOMICAL BASES OF THE STUDY OF THE CONSTRAINTS TO WHICH THE CERVICAL-SPINE IS SUBJECT IN THE SAGITTAL PLANE - A STUDY OF THE CENTER OF GRAVITY OF THE HEAD
ANATOMICAL BASES OF THE STUDY OF THE CONSTRAINTS TO WHICH THE CERVICAL-SPINE IS SUBJECT IN THE SAGITTAL PLANE - A STUDY OF THE CENTER OF GRAVITY OF THE HEAD
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DOI：
10.1007/bf02427845
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发表时间：
1986-01-01
影响因子：
1.4
通讯作者：
SENEGAS, J
中科院分区：
文献类型：
--
作者：
VITAL, JM;SENEGAS, J
根据波尔多人类学家Beauvieux的工作，作者通过悬挂法确定了6个孤立的福尔马林化头部的重心位置;在他看来，鼻根-后突线（鼻根到枕骨大孔后缘）是头部水平的特征，与物种无关。重心位于鼻根-隆突线（鼻根至枕外隆凸）的中部，蝶鞍后方，外耳道上方略前方。在轮廓中，重力轴福尔斯在离开重心时下落，并在颈椎前方经过，颈椎由于支点杠杆而保持平衡，当凝视相对于水平方向向下30度时，支点杠杆的两臂相等。这是颈椎在矢状面中的真实参考位置。
The authors have determined the position of the center of gravity of six isolated formolized heads by the suspension method, based on the work of the Bordeaux anthropologist, Beauvieux; in his opinion, the nasion-opisthion line (root of nose to posterior edge of the foramen magnum) characterizes the horizontality of the head, irrespective of species. The center of gravity is situated at the middle of the nasion-inion line (root of nose to external occipital protuberance), behind the sella turcica, above and slightly in front of the external auditory meatus. In profile, the axis of gravity falls on leaving the center of gravity and passes in front of the cervical spine, which remains in balance thanks to a fulcrum lever whose two arms are equal when the gaze is directed 30 degrees downwards in relation to the horizontal. This is the true reference position for the cervical spine in the sagittal plane.