Convertible Glenoid Baseplate With Offset Pad for Shoulder Conversion
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Solution Overview
Problem
Existing orthopaedic implant systems fail to effectively address bone defects and joint instability, particularly in the glenoid bone, leading to pain and reduced functionality due to bone erosion or fracture, and lack versatility in adapting to different surgical procedures.
Innovation Solution
A convertible orthopaedic implant system that can switch between anatomical and reverse shoulder configurations using a baseplate and pad system, with offset centers of mass and customizable components, allowing for secure attachment and improved healing by minimizing surgical site alteration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional orthopaedic implant system is used to repair bone defects, then the implant can be secured to the glenoid, but the system lacks versatility to adapt to different surgical procedures (anatomical vs. reverse shoulder configurations)
Solution Approach 1:
The baseplate is designed as a universal component that can serve multiple functions by supporting different articulating components. The same baseplate can be used with either an anatomical configuration (with a pad having offset center of mass) or a reverse shoulder configuration (with a glenosphere), eliminating the need for procedure-specific baseplates and reducing overall system complexity while maximizing adaptability.
Solution Approach 2:
The implant system is segmented into modular components: a standardized baseplate and interchangeable articulating components (pad or glenosphere). This segmentation allows the baseplate to remain constant while only the articulating component needs to be changed between procedures, simplifying the overall system design while maintaining versatility.
2Reliability
If the pad is secured to the baseplate with offset centers of mass, then the system provides stable fixation for anatomical procedures, but the pad cannot be easily removed for conversion to reverse shoulder configuration
Solution Approach 1:
The connection between the pad and baseplate is designed to be dynamic rather than permanent. The pad can be securely fixed during anatomical procedures but can be easily removed when conversion to reverse shoulder configuration is needed. This dynamic capability allows the system to transition from a stable fixed state to an easily modifiable state, resolving the contradiction between fixation stability and ease of conversion.
3Adaptability or versatility
If the implant system requires multiple different baseplates for different procedures, then each procedure can be optimized, but the number of components and surgical site alterations increase
Solution Approach 1:
A single universal baseplate design replaces the need for multiple procedure-specific baseplates. This universal baseplate can accommodate both anatomical and reverse shoulder configurations through its ability to support different articulating components, thereby reducing the total quantity of implant components needed while maintaining procedure-specific optimization capabilities.
Solution Approach 2:
The functionality of multiple different baseplates is merged into a single universal baseplate design. By combining the essential fixation features needed for both anatomical and reverse shoulder procedures into one baseplate type, the system reduces component quantity while maintaining the ability to optimize each procedure through the choice of articulating component rather than baseplate design.
Data Source
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AI summary
This disclosure relates to orthopaedic implant systems (20) and methods for restoring functionality to a joint. The implant systems disclosed herein include offset arrangements that may facilitate conversion of the implant system during a subsequent surgical procedure.