First Metatarsal Osteotomy Cuts for Multi-Plane Bone Realignment
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Solution Overview
Problem
Anatomical misalignment of bones, particularly in the foot, often requires surgical intervention to correct and improve patient comfort and quality of life, with existing methods lacking efficient techniques for precise bone realignment.
Innovation Solution
A method involving parallel but offset longitudinal cuts on the first metatarsal, followed by transverse cuts to create a wedge-shaped section, allowing the bone to be divided into movable portions that can be realigned in multiple planes, with the option of using the removed wedge as an autograft or alternative bone constructs to fill gaps during realignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional bone cutting methods are used, then the surgical procedure can be performed, but the precision and efficiency of bone realignment is insufficient
Solution Approach 1:
The bone is divided into multiple segments through precise cutting guides that create controlled fractures. The cutting guide segments the bone structure into movable portions that can be independently positioned, enabling accurate realignment while reducing the time required for manual bone manipulation.
Solution Approach 2:
A cutting guide acts as an intermediary device between the surgeon and the bone. This guide provides pre-defined cutting paths and angles, serving as a mediator that ensures precise bone separation and facilitates efficient realignment without requiring complex manual techniques.
2Manufacturing precision
If complex cutting patterns are used to achieve precise realignment, then bone alignment accuracy improves, but the surgical procedure becomes more complex and time-consuming
Solution Approach 1:
The cutting guide serves as a simplified intermediary that translates complex realignment requirements into straightforward cutting actions. By providing pre-programmed cutting paths, the guide reduces procedural complexity while maintaining high precision in bone cuts.
Solution Approach 2:
The cutting guide is pre-configured with the desired bone alignment parameters before surgery. This preliminary preparation of cutting paths and angles eliminates the need for complex intraoperative calculations and adjustments, simplifying the surgical procedure while ensuring precise bone cuts.
Data Source
AI summary
Devices and techniques for adjusting an alignment for a first metatarsal may include making a plurality of cuts along the length of the first metatarsal. In different applications of the technique, a plurality of transverse cuts may or may not be made intersecting the longitudinal cuts. In either case, the cuts can separate the first metatarsal into two individual portions and release a removable wedge of bone. The different portions of the metatarsal can be moved relative to each other to adjust an anatomical alignment of one portion relative to another portion, for example in multiple planes. After suitably adjusting the alignment of the different bone portions, the portions can be fixed together.