Methods of data smoothing for instantaneous centre of rotation measurements
Methods of data smoothing for instantaneous centre of rotation measurements
复制标题
瞬时旋转中心测量的数据平滑方法
DOI：
10.1007/bf02443876
复制
发表时间：
1984
影响因子：
3.2
通讯作者：
P. Lowe
中科院分区：
文献类型：
--
作者：
J. T. Bryant;H. Wevers;P. Lowe
机械工程原理应用于骨科问题的最新趋势是对关节运动的精确记录。一般来说，这需要三维分析，因为所有关节都在三个平面上旋转。然而，许多作者通过假设它是平面的来简化运动。对于具有主要旋转的关节，如膝盖、肘关节和手指，这是理解其运动学的合理的第一步。研究平面运动的其他情况是关节受到外部约束的情况。通常，目标是观察关节对施加载荷的响应，从而记录其在特定平面上的力-挠度特性。虽然二维分析不是一种通用的方法，但在研究骨骼生物力学时，二维分析是一种流行而有用的技术。平面关节运动的测量经常依赖于瞬时旋转中心的概念。ICR被描述为两个具有相同速度的物体上的重合点。人们可以把这个中心想象成一个物体相对于另一个物体瞬间旋转的点（HARTENBERG和DENAVIT， 1964）。为了估计ICR，可以使用如图1所示的勒洛法。A和B代表两个“目标”点
Arecent trend in the application of mechanical engineering principles to orthopaedic problems is toward precise documentation of joint motion. Generally, this requires a threedimensional analysis' since all articulating joints rotate to some extent in three planes. Many authors, however, simplify motion by assuming it to be planar. In joints which have a dominant primary rotation, such as the knee, elbow and digits, this is a reasonable first step toward understanding their kinematics. Other cases for studying planar motion are those in which the joint is constrained externally. Often, an objective is to observe the response of the joint to an applied load, thereby documenting its force-deflection characteristics in a specific plane. Although not a generalised approach, two-dimensional analysis is a popular and useful technique when studying skeletal biomechanics. Measurement of planar joint movement frequently relies on the concept of instantaneous centre of rotation (ICR). The ICR is described as the coincident point on two bodies which has the same velocity. One may envisage this centre as the point about which one body is instantaneously rotating with respect to the other (HARTENBERG and DENAVIT, 1964). To estimate an ICR, the method of Reuleaux may be used as shown in Fig. 1. A and B represent two'target'points on