Patient-Specific Osteotomy Guides for Precise Bone Alignment
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Solution Overview
Problem
Current osteotomy procedures, particularly supramalleolar osteotomies, lack precision due to the use of off-the-shelf plating and non-patient-specific instrumentation, leading to imprecise cuts and graft placement, especially in anterior procedures.
Innovation Solution
A guide system comprising an alignment block and a removably coupled cut guide, designed for precise alignment and cutting, which includes patient-specific features for improved accuracy in osteotomy procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If off-the-shelf plating and non-patient-specific instrumentation are used, then device availability and ease of manufacture are improved, but manufacturing precision and measurement precision deteriorate
Solution Approach 1:
Patient-specific instrumentation is manufactured prior to surgery based on pre-operative imaging data (CT or MRI scans). The PSI components including guides, jigs, and alignment tools are custom-fabricated to match the patient's unique anatomy, ensuring precise osteotomy cuts and implant placement while maintaining ease of manufacture through standardized manufacturing processes
Solution Approach 2:
The PSI system provides localized customization for each patient's specific anatomical features and pathology. Different regions of the PSI components are designed with specific properties: alignment guides match the patient's bone geometry, cut guides are positioned at precise locations for osteotomy, and implant guides are tailored to the specific implant type and patient anatomy
2Device complexity
If off-the-shelf plating and non-patient-specific instrumentation are used, then device complexity is reduced, but measurement precision and alignment accuracy worsen
Solution Approach 1:
All measurements and planning are completed pre-operatively using imaging data. The PSI components are designed and manufactured before surgery based on virtual surgical planning, eliminating the need for complex intraoperative measurements and adjustments. This reduces intraoperative device complexity while maintaining high measurement precision through pre-planned, patient-specific geometry
Solution Approach 2:
The PSI system creates physical copies or replicas of the patient's specific anatomical structures based on pre-operative imaging. The guides and jigs are manufactured to match the patient's unique bone geometry, providing precise alignment and positioning without requiring complex intraoperative measurement devices
Data Source
AI summary
Instruments, devices, systems and methods for maintaining, correcting and/or fusing joint deformities are disclosed. Guide systems including an alignment block and a cut guide removably coupled to the alignment block. Osteotomy guides including an alignment block and a cut guide removably coupled to the alignment block. Osteotomy guides including a body, a first alignment member coupled to and extending away from a superior surface of the body, and a second alignment member coupled to and extending away from an inferior surface of the body. Methods of assembling and using the osteotomy guides and systems for maintaining, correcting and/or fusing joint deformities are also disclosed.