Bone Osteotomy Guide for Precise Shortening and Fragment Alignment
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Solution Overview
Problem
Existing bone shortening osteotomies, particularly for the second metatarsal bone, face challenges in precise control, stabilization, visualization, and alignment due to the bone's small size and soft tissue support, leading to complications such as misplacement of fixation and instability of bone fragments.
Innovation Solution
A guide system comprising a block and a base, which are fixed to the bone to guide cutting and fixation components, allowing precise separation and alignment of bone parts, followed by fixation using drilling components and fasteners to maintain the desired relationship.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If freehand procedure is used for bone shortening osteotomy, then the procedure can be performed without precision guidance equipment, but manufacturing precision and alignment accuracy deteriorate
Solution Approach 1:
The guide system is assembled and fixed to the bone before the osteotomy procedure begins. The guide block and base are positioned and secured with fixation pins to establish precise reference points on the bone surface, enabling accurate cutting guidance while maintaining ease of procedure through pre-positioning
Solution Approach 2:
The guide system acts as an intermediary between the surgeon and the bone. The guide block with cutting surface and the base with fixation elements mediate the interaction, providing precise alignment and control during the osteotomy without requiring the surgeon to directly manipulate the bone with high precision
2Manufacturing precision
If guide system is used for bone shortening osteotomy, then alignment precision and control are improved, but device complexity increases
Solution Approach 1:
The guide system is divided into separate components: a guide block with cutting surface, a base with fixation elements, and fixation pins. These modular segments can be independently positioned, fixed, and removed, simplifying the overall device while maintaining alignment precision through coordinated assembly
Solution Approach 2:
The guide system components serve multiple functions: the base provides fixation points and structural support, the guide block provides cutting guidance and alignment reference, and the fixation pins secure both components to the bone. This multi-functionality reduces the need for additional specialized devices
Data Source
AI summary
A method of, and a guide system for, performing a bone osteotomy. The guide system has at least a first edge for guiding a cutting component. A block and a cooperating base each is configured to be releasably fixed in an operative position relative to a bone. The block has a connector that cooperates with a connector on the base to guide relative movement of the base and block substantially along a first line. A gap of a first width is created between facing surfaces on relatively movable bone parts, with the base and block fixed one each thereto. The block and base are configured so that the block and base can be guidingly relatively moved to thereby: a) reduce the width of the gap from the first width; b) move the facing surfaces towards each other; and c) place the bone parts in a desired relationship. The bone parts can be fixed in relationship to each other in different manners to maintain the desired relationship.