Orthopedic Boot with Hindfoot Support Pillar for Forefoot Offloading
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Solution Overview
Problem
Traditional orthopedic devices, such as casts and surgical boots, restrict ambulation and exacerbate healing complications by distributing weight across the entire foot, making it difficult for patients to walk independently and increasing the risk of deep venous thrombosis, osseous malunions, and nonunions during recovery from foot injuries or surgeries.
Innovation Solution
An orthopedic device with a continuous support pillar that offloads weight from the forefoot, allowing for ambulation without applying pressure to the unsupported foot, featuring a boot design with a hindfoot support pillar and upper assembly that secures to the leg and foot, enabling near-full ambulation while preventing pressure on the forefoot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional casts and surgical boots are used to immobilize the foot, then stability and protection are improved, but ambulation is restricted and weight-bearing pressure is distributed across the entire foot
Solution Approach 1:
The foot is divided into weight-bearing portions (hindfoot) and non-weight-bearing portions (forefoot), with the device providing selective support only to the hindfoot while leaving the forefoot unsupported, allowing differentiated functional zones
Solution Approach 2:
The device extracts or removes weight-bearing support from the forefoot area, creating a void or gap in the traditional full-foot immobilization approach, thereby eliminating unnecessary pressure on the forefoot while maintaining hindfoot stability
2Strength
If traditional casts and surgical boots distribute weight across the entire foot, then structural support is improved, but the risk of deep venous thrombosis and osseous malunions increases
Solution Approach 1:
The device provides localized structural support only to the hindfoot portion while leaving the forefoot without support, creating different mechanical properties in different zones to match the specific healing requirements of each area
Solution Approach 2:
The device converts the harmful effect of full-foot weight-bearing (which causes DVT and malunions) into a benefit by selectively eliminating weight-bearing pressure from the forefoot, thereby preventing complications while maintaining necessary structural support
3Reliability
If non-weight bearing is required for forefoot fractures and surgeries, then healing is protected from misalignment, but independent ambulation becomes difficult and quality of life decreases
Solution Approach 1:
The device provides partial weight-bearing capability by supporting only the hindfoot while leaving the forefoot unsupported, allowing the patient to walk independently without putting weight on the injured forefoot, thereby achieving both healing protection and ambulation
Data Source
AI summary
Disclosed herein are orthopedic devices and methods to aid in reducing weight or pressure on a portion of a subject's foot while maintaining stability of the hindfoot and ankle. Certain embodiments include an upper assembly and a support pillar configured to extend beneath only a portion of a subject's foot. The support pillar can be configured to extend from the heel of a subject's foot to the subject's midfoot, such that at least a portion of the subject's forefoot extends lengthwise therebeyond and does not contact the support pillar. The orthopedic device can further include one or more means for securing the upper assembly around the leg, ankle, dorsal foot, or a combination thereof. Additional aspects include a method of promoting the healing of a podiatric condition using any one or more of the orthopedic devices disclosed herein.