Orthopedic footwear with dynamic medial longitudinal arch support

Abstract

The various embodiments herein provide an orthopedic footwear for correcting a foot deformity. The orthopedic footwear comprises an upper for covering a user's foot, a sole comprising an anterior part, a posterior part and a medial part, and a plurality of Bowden cables for connecting the posterior part and the anterior part of the sole. The sole configured to receive the user's foot. The Bowden cables are configured to vary a height of the medial part of the sole to provide a dynamic support to a medial-longitudinal arch of the user's foot.

Description

SPONSORSHIP STATEMENT[0001]The present invention is sponsored by INSF (Iranian National Science Foundation) for international filing.BACKGROUND[0002]1. Technical Field[0003]The embodiments herein generally relate to an orthopedic device.[0004]The embodiments herein particularly relates to an orthopedic footwear with a dynamic medial longitudinal arch support.[0005]2. Description of the Related Art[0006]Foot plays a very important role in gait, because of its three functions in shock absorption, balancing and muscle force transfer to have optimum body progression. A medial longitudinal arch is the most important biomechanical organizer of the foot during walking. The arch is dynamic and its height varies in the gait cycle. Gait has two phases. The first phase is known as stance in which the foot is in contact with the earth and in the second phase, the foot is not in contact with the earth. In the initial stance, a subtalar joint comes in pronation and the arch height is lowered. In ...

AI Technical Summary

Benefits of technology

The patent describes a type of footwear that helps correct foot deformities. It includes an upper that covers the foot, with a sole that has a medial part and is connected to the upper through a series of cables. The cables are designed to vary the height of the medial part of the sole, providing support for the arch of the foot. The sole has different parts for different stages of walking or running, with the medial part positioned under the arch and the posterior part positioned under the heel. The cables transfer from the anterior part to the posterior part of the sole through an interior side of the medial part. In the initial stance, the cables are extended to lower the medial part, and in the terminal stance, they are contracted to raise the medial part to provide dynamic support for the arch.

Problems solved by technology

Despite completing the initial stance, the terminal stance of the foot movement is not normal due to an inability of the subtalar joint.

Since the muscle force transition is not optimum and more muscle effort is necessary for body progression thereby resulting a muscle fatigue in consequence.

Other flat foot complications are abnormality in the tarsal bone morphology.

But a lack of supination in a flat foot cases abnormality in the tarsal bones, especially talus and navicular bones morphology.

This change in the joint's biomechanics can cause some degenerative diseases such as knee osteoarthritis and patellofemoral joint pain.

One of the drawbacks in using the traditional orthosis while walking is that the orthosis affects the subtalar joint pronation in the initial phase of stance.

A lack of pronation in the initial stance will result in multiple complications.

A lack of supination-pronation cycle in subtalar joint, regardless of using orthosis, leads to abnormal tarsal bone morphology.

A lack of recovery of the normal subtalar joint biomechanics, regardless of using orthosis, leads to abnormal adjacent joint biomechanics.

In overall, regardless of using the traditional orthosis, the biomechanical defect remains.

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