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Preparation method of individual artificial knee joint based on biomechanics

An artificial knee joint and biomechanical technology, applied in the field of artificial joint preparation, can solve the problems of short service life, poor matching, unreasonable stress distribution, etc., and achieve the effect of improving lifespan and optimizing performance

Active Publication Date: 2016-11-16
TAIYUAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of unreasonable stress distribution and short service life of existing artificial joints and human joints due to poor matching, the present invention provides a biomechanics-based personalized artificial knee joint preparation method
[0006] The artificial knee joint prepared by this method overcomes the problems of poor matching between existing artificial joints and human joints, unreasonable stress distribution and short service life.

Method used

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Embodiment Construction

[0008] A biomechanics-based personalized artificial knee joint preparation method, using the following steps: a. Use tomography or nuclear magnetic resonance technology to make a standard template for normal human physiological data, including parameters: age, gender, height, weight, lower limb length, Anatomical data of thigh length, calf length, knee width, ankle width and tomographic data of joints; b. Use a three-dimensional motion analysis and capture system combined with force plates and surface electromyography equipment to create kinematics and dynamics during normal human walking Data standard template, the main parameters are the relative spatial relationship of joint motion, ground reaction force and EMG information; c. Use inverse dynamics software to combine the data in the standard template of kinematics and dynamics during normal human walking to make normal human walking The data standard template of muscle force and joint reaction force at time, and input to the...

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Abstract

The invention provides a preparation method of individual artificial knee joint based on biomechanics, for solving the problem that the matching degree between the existing artificial joint and the human body joint is poor, so that the stress distribution is unreasonable, and the service life is short. The preparation method comprises the following steps: manufacturing a physiological data standard template of the normal human body; manufacturing a physiological data standard template of a patient; according to the physiological data standard template of the patient, searching for data matched with the physiological data standard template of the patient, wherein the data is taken as a contrast; searching for muscle with malformed stressing in the lower limb muscle of the patient in the gait period; calculating to obtain kinematic data in the gait period; comparing the kinematic data obtained after substitution with the contrast, finding out the differences, modifying the design of the artificial knee till the obtained kinematic data is matched with the kinematic data of the contrast, thus obtaining the individual artificial knee joint conforming to the mechanics characteristics of the biomechanics. According to the preparation method, while the performances of the artificial knee are optimized, the service life of the artificial knee in the body of the patient is effectively prolonged.

Description

Technical field [0001] The invention relates to a preparation method of an artificial joint, in particular to a preparation method of a personalized artificial knee joint based on biomechanics. Background technique [0002] At present, my country has become one of the countries with the largest elderly population in the world, and the incidence of senile diseases, including knee osteoarthropathy and hip osteoarthropathy, is increasing with age. Bone and joint diseases have seriously affected the quality of life of the elderly, and even threatened their lives. At present, with the development of the economy and the improvement of living standards, osteoarthropathy has begun to tend to be younger. In the future, more and more people will suffer from osteoarthropathy. [0003] Artificial joint replacement is most suitable for people with joint dysfunction caused by osteoarthritis. Although joint replacement has become a more common method to solve osteoarthritis, and there is a high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/38A61F2/3836
Inventor 陈维毅郭媛刘春生张绪树
Owner TAIYUAN UNIV OF TECH
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