Method for testing the movement degree variation of the joints between bones

Abstract

The present invention belongs to the field of biological and medical laboratory technique, relates to interosseous articular kinesiology and mechanics change, in the concrete, it relates to a method for testing interosseous articular kinetic degree change, specially, it relates to a method for testing intertarsal joint activity. Said method is characterized by that it includes the following several main steps: utilizing calculation principle of rigid body kinematics in physical mechanics to define three-dimensional coordinate system of pedal kinetic system, using three-dimensional digital coordinate instrument to measure three-dimensional coordinate value, resolving nonlinear equation, making matrix conversion, calculating changed value of three-dimensional position relationship from one state to another state so as to obtain the pedal intertarsal joint activity.

Description

technical field [0001] The invention belongs to the technical field of biological and medical experiments. The invention relates to kinematics and mechanical changes of interosseous joints, and specifically relates to a method for testing the change of interosseous joint motion, especially a method for testing the motion of intertarsal joints. Background technique [0002] The subtalar joint, also known as the heel-talar joint, is a complex structure that plays an important role in the biomechanics of the midfoot and hindfoot. However, due to its relatively small range of motion relative to the foot, it has not attracted enough awareness for a long time. With the treatment of common diseases such as flat feet, posterior tibial tendon insufficiency, rheumatoid arthritis, degenerative arthritis, foot deformities, traumatic and post-traumatic arthritis, conservative treatment has turned to surgical treatment, and the most widely used one is Fusion has achieved corresponding c...

AI Technical Summary

Problems solved by technology

However, at present, most of the researches are usually only on the simple biomechanics of the normal foot, and the changes in the alignment of bones and joints caused by various operations are mostly determined by methods such as X-ray photography, but for The changes in the range of motion before and after the operation are also measured in general, and there is a lack of objective and effective research methods and measurement methods, especially in the basic research. After studying the data and materials in detail, there are still many unresolved issues, such as the specific range of motion and motion mode of the joints of the middle and rear feet under normal conditions, what kind of motion they produce in different motion postures, and the distance between them. After the lower arthrodesis, which joint mainly affects the movement function and the extent of the influence, what effect does it have on the movement function of other joints of the middle and rear feet, whether it affects the stability of the arch of the foot, and the surrounding tendons and ligaments, etc. Whether soft tissue is affected, what is the degree of influence, what is the impact of subtalar joint fusion on the pressure distribution of many joints of the middle and rear feet, etc. The mechanism explanation has practical significance

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