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Method for positioning functional elbow joint rotation center based on kinematics parameters

A technology of kinematic parameters and center of rotation, applied in medical science, diagnosis, physical therapy or behavior, etc., can solve problems such as ignoring the importance of the elbow joint

Active Publication Date: 2021-04-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the 22 joints of the whole body are positioned by the shoulder joint functional rotation center positioning method, thus ignoring the importance of the elbow joint

Method used

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  • Method for positioning functional elbow joint rotation center based on kinematics parameters
  • Method for positioning functional elbow joint rotation center based on kinematics parameters
  • Method for positioning functional elbow joint rotation center based on kinematics parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 1 As shown, step 100 is executed to obtain the subject's body parameters and data preprocessing. The subject's body parameters include morphological parameters and / or related kinematic parameters under gait. Morphological parameters include girth parameters, width parameters, height parameters and the length and height of human limbs. The acquisition method of the morphological parameters includes: 1) measuring the girth parameter and the width parameter by adopting a natural standing posture, wherein the natural standing posture is that the feet of the human body are opened shoulder-width apart in the natural standing posture, and the hands are opened away from the trunk; 2) Measure the height parameter by using the posture of standing at attention. The posture of standing at attention is that the arms of the human body are close to the trunk, the legs are close together, and the heels of both feet are close together; 3) The length and height of the limb...

Embodiment 2

[0082] The functional method of estimating the position of the joint rotation center based on the kinematic parameters of the body segment is a widely used analysis method, which is very practical in the process of clinical detection, gait analysis, and posture acquisition. The internal joints of the human body cannot be accurately estimated by palpation. Even if the inspector has rich and systematic anatomical knowledge, there will be large errors, especially in the face of patients after joint replacement surgery. At the same time, although the gold standard nuclear magnetic imaging method has the highest accuracy, it is expensive, complicated to operate, and has a single posture for each scan. The functional method does not require systematic anatomical knowledge, and its accuracy has been proven by scholars such as Stokdijk and others by measuring the position of the shoulder joint of the corpse. Functional methods are widely used in various fields due to their practicalit...

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Abstract

The invention provides a method for positioning a functional elbow joint rotation center based on kinematics parameters. The method comprises the steps of obtaining body parameters of a testee and preprocessing data, and further comprises the following steps of correcting the reference axis direction, conducting reference axis direction height compensation and positioning the functional elbow joint rotation center. According to the method for positioning the functional elbow joint rotation center based on the kinematics parameters, the functional elbow joint rotation center is positioned to better conform to elbow joint anatomy knowledge, the precision is higher in the upper arm aspect and the forearm aspect, the upper arm body section model and the forearm body section model are unified in the positioning process, and the two body sections in the models are connected end to facilitate subsequent calculation.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to a method for locating the rotation center of a functional elbow joint based on kinematic parameters. Background technique [0002] The functional method of estimating the position of the joint rotation center based on the kinematic parameters of the body segment is a widely used analysis method, which is very practical in the process of clinical detection, gait analysis, and posture acquisition. The internal joints of the human body cannot be accurately estimated by palpation. Even if the inspector has rich and systematic anatomical knowledge, there will be large errors, especially in the face of patients after joint replacement surgery. At the same time, although the gold standard nuclear magnetic imaging method has the highest accuracy, it is expensive, complicated to operate, and has a single posture for each scan. The functional method does not require syste...

Claims

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Application Information

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IPC IPC(8): A61B5/11G16H20/30G06K9/00
CPCA61B5/1118A61B5/1121A61B5/1116A61B5/1128A61B5/112G16H20/30G06V40/20
Inventor 周子健刘光达孙嘉琪倪维广董梦坤许蓝予肖若兰
Owner JILIN UNIV