Equilibrium of the human body and the gravity line: the basics.
Equilibrium of the human body and the gravity line: the basics.
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DOI：
10.1007/s00586-011-1939-7
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发表时间：
2011-09-01
期刊：
影响因子：
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通讯作者：
Aunoble, S
中科院分区：
文献类型：
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作者：
Le Huec, J C;Saddiki, R;Aunoble, S
简介：两足行走是人类的一个显著特征，其特征是支撑的底部狭窄，由于腰椎和颈椎的弯曲，因此具有人体工程学最佳位置。材料：骨盆，适合于两足行走，可以被认为是连接脊柱和下肢的骨盆椎骨。横向上，身体的重心线位于非常轻微的股骨头后面的横向上，和frontally它贯穿骶骨的中间在一个点等距的两个股骨头。结果：任何异常变化，通过脊柱后凸关于脊柱曲线的结果补偿，首先在骨盆通过旋转，然后在下肢通过膝关节屈曲。该机构将重力线保持在支撑底座内，但不符合人体工程学。为了分析矢状面平衡，我们必须因此定义有关的参数和它们之间的关系。结论：这些参数如下：对于骨盆：入射角，骨盆倾斜，骶骨斜率;对于脊柱：脊柱前凸点，腰椎前凸顶点，腰椎前凸，C7脊柱倾斜;对于整体分析：脊柱骶骨角，这是一个内在的参数。
INTRODUCTION: Bipedalism is a distinguishing feature of the human race and is characterised by a narrow base of support and an ergonomically optimal position thanks to the appearance of lumbar and cervical curves.MATERIALS: The pelvis, adapted to bipedalism, may be considered as the pelvic vertebra connecting the spine to the lower limbs. Laterally, the body's line of gravity is situated very slightly behind the femoral heads laterally, and frontally it runs through the middle of the sacrum at a point equidistant from the two femoral heads.RESULTS: Any abnormal change through kyphosis regarding the spinal curves results in compensation, first in the pelvis through rotation and then in the lower limbs via knee flexion. This mechanism maintains the line of gravity within the base of support but is not ergonomic. To analyse sagittal balance, we must thus define the parameters concerned and the relationships between them.CONCLUSION: These parameters are as follows: for the pelvis: incidence angle, pelvis tilt, sacral slope; for the spine: point of inflexion, apex of lumbar lordosis, lumbar lordosis, spinal tilt at C7; for overall analysis: spino-sacral angle, which is an intrinsic parameter.