Osteotomy Guide for Precise Angular Bone Correction
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Solution Overview
Problem
Existing osteotomy procedures often result in undesirable angular corrections and length changes in bones, leading to complications such as deformities and pain, particularly in the foot, due to inadequate methods for aligning bone segments.
Innovation Solution
A method and instrument, including an osteotomy guide with converging guide surfaces, are used to remove a bone wedge from one side and make a cut on the opposite side, allowing the bone to be rotated to create a gap on the other side, facilitating precise angular correction and filling the gap to promote healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional osteotomy methods are used to correct angular alignment, then bone alignment can be adjusted, but undesirable results occur including deformities, pain, and incorrect angular corrections
Solution Approach 1:
The osteotomy guide is designed and positioned before the actual cutting operation, allowing the desired angular correction to be predetermined and pre-planned. The guide surfaces are configured to establish the correct angular relationship between bone segments before the osteotomy is performed, ensuring precise alignment is achieved in advance of the actual bone cutting and repositioning
Solution Approach 2:
The osteotomy guide acts as an intermediary device between the surgeon's intent and the actual bone repositioning. The guide with its specific guide surfaces mediates the angular correction by providing a physical template that ensures the correct angular relationship is maintained during the osteotomy procedure, preventing both over-correction and under-correction
2Manufacturing precision
If bone segments are realigned to correct deformities, then angular alignment improves, but bone length changes occur leading to additional complications
Solution Approach 1:
The osteotomy guide divides the correction process into separate functional components: angular alignment is achieved through the guide surfaces while bone length is controlled through separate positioning features. This segmentation allows independent control of angular correction and length maintenance, preventing the coupling of these two parameters that causes complications in traditional methods
Data Source
AI summary
Methods and devices for performing an osteotomy on a bone are presented. In one example of the invention, a method of performing an osteotomy on a bone includes removing a portion of bone from a first side of the bone to create a gap on the first side of the bone; making a cut on a second side of the bone, opposite the first side; and rotating the bone from a first position to a second position to close the gap on the first side of the bone and open the cut on the second side of the bone to create a gap on the second side of the bone.