Knee joint orthosis

Abstract

The invention discloses a knee joint orthosis, relates to the technical field of orthosis, and solves the problems of single function and poor orthosis effect of the existing orthosis. According to the technical scheme, a connecting structure comprises a medial plate and a lateral plate; the lateral plate is provided with a supporting column, which is provided with a universal ball; the medial plate is provided with a universal shell, which is movably connected with the universal ball; the medial plate is provided with a limiting piece, which comprises two connecting rods and a limiting ball;the limiting ball is movably connected with the connecting rods; the lateral plate is provided with a limiting surface for the limiting ball to contact and roll; the limiting surface comprises convexsurfaces and concave surfaces, which are alternately arranged; when the thigh and the shank are unfolded and straightened, the limiting ball is located in the center of the convex surfaces; when the thigh is bent to be perpendicular to the shank, the limiting ball is located in the center of the concave surfaces; the device can support the knee joint to do stretching and bending motion and can also support the knee joint to do inward and outward rotation motion, and the inward and outward rotation motion performance of the knee joint is changed in a self-adaptive mode along with the stretchingand bending motion of the knee joint.

Description

technical field [0001] The present invention relates to the technical field of orthoses, and more particularly, it relates to knee orthoses. Background technique [0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia, and the patella. It is the largest and most complex joint in the human body. It bears a lot of weight and has a large amount of exercise. It belongs to the pulley joint and is the hub of lower limb activities. Therefore, its injury rate ranks first among all joints. Among them, one of the most common diseases is osteoarthritis, which is a chronic joint disease characterized by the degeneration, wear and tear of articular cartilage and bone hyperplasia. Long-term and increased joint load is the main external cause of the disease . At the same time, knee articular cartilage wear, meniscus injury, tibial plateau fracture, and tibial node avascular necrosis are also common diseases of the knee joint, and the occurrence of th...

AI Technical Summary

Problems solved by technology

[0005] However, most of the existing knee orthoses can only support the knee joint for flexion and extension, and are limited by the hinged part of the orthosis, which cannot support the internal and external rotation of the knee joint, which may easily cause damage to the cartilage, meniscus, and auxiliary ligament and other auxiliary functions degenerate during the orthopedic process; while a small number of knee orthoses can manually adjust the hinge to support the internal and external rotation of the knee joint, but the operation is difficult and the flexibility is poor, which can easily lead to knee joint internal and external rotation. Deviation from normal motor performance after external rotation movement correction

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