Orthopedic Shoe Appliance with Selective Metatarsal Support
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Solution Overview
Problem
Existing orthopedic devices fail to provide adequate support and freedom of motion in specific areas of the foot, leading to inefficient ambulation and pain, as they often provide uniform support that restricts normal gait and exacerbates conditions like bunions, hammertoes, and Achilles tendon disorders.
Innovation Solution
The development of orthopedic appliances with varying heights and material properties that selectively stabilize certain segments of the foot while allowing others to move freely, specifically providing support under the midfoot arches and second/third metatarsals while avoiding support under the heel and first/fourth/fifth metatarsals to promote normal gait and reduce pain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If uniform support is provided across the entire foot, then overall foot stability is improved, but normal gait motion and freedom of movement in specific areas are restricted
Solution Approach 1:
The orthopedic appliance implements local quality by providing support only in specific areas of the foot (heel, midfoot arches, and selected metatarsals) rather than uniform support across the entire foot. This allows stable support where needed while permitting natural motion in unsupported areas, resolving the contradiction between foot stability and freedom of motion during gait.
2Stability of the object's composition
If support is provided under all metatarsals, then foot stability is improved, but excessive motion restriction leads to pain and inefficient ambulation
Solution Approach 1:
The orthopedic appliance segments the support function by providing support under specific metatarsals (second and third) while deliberately excluding support under others (first, fourth, and fifth). This segmentation allows stability in weight-bearing areas while permitting necessary motion in mobile adapter areas, thereby reducing pain and improving ambulation efficiency.
3Stability of the object's composition
If the foot is fully supported, then structural stability is improved, but the mobile adapter function and shock absorption are compromised
Solution Approach 1:
The orthopedic appliance applies local quality by strategically positioning support only under the heel and midfoot arches while leaving the forefoot and specific metatarsal areas unsupported. This enables the foot to maintain structural stability during weight acceptance while preserving the mobile adapter function and shock absorption capabilities during gait progression.
Data Source
AI summary
An orthopedic shoe appliance includes a pad for providing support for midfoot arches, the second metatarsal, and the third metatarsal of a foot, wherein the pad does not provide substantial support under a heel of the foot or under the first metatarsal, the fourth metatarsal, and the fifth metatarsal. A method for manufacturing an orthopedic appliance includes obtaining a pad; and shaping the pad to provide support for midfoot arches, the second metatarsal, and the third metatarsal of a foot, but not provide substantial support under a heel of the foot or under the first metatarsal, the fourth metatarsal, and the fifth metatarsal.