Revision Implant Augments for Ankle Osteolysis
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Solution Overview
Problem
Total joint replacements in orthopedic implants often experience voids in the bone due to osteolysis over time, leading to loosening of the prosthesis and complications for the patient.
Innovation Solution
The development of revision implant components with unique shapes and features that can be coupled to existing multi-component prostheses to fill these voids, using mechanisms such as Morse tapers, threads, and bayonet couplings, allowing for secure attachment and revision of the implant system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-component prosthesis is implanted to replace a natural joint, then the joint function is restored, but voids form in the bone over time due to osteolysis causing loosening
Solution Approach 1:
The revision implant is divided into multiple components including a first revision implant component that couples to the original prosthesis and a second revision implant component that replaces the voided bone. This segmentation allows each component to address specific issues: the first component maintains connection to the original implant while the second component fills bone voids and provides new structural support, thereby preventing loosening and extending longevity.
Solution Approach 2:
The revision implant components are designed to nest within the original prosthesis structure. The first revision implant component couples to features of the original multi-component prosthesis, effectively placing the revision components inside or attached to the existing implant structure. This nesting approach allows the revision implant to utilize the original prosthesis as a foundation while adding new elements to address bone voids and improve long-term stability.
2Reliability
If revision implant components are designed with unique shapes and coupling features, then secure attachment to existing prostheses is achieved, but device complexity increases
Solution Approach 1:
The first revision implant component is designed with coupling features that can attach to multiple different types of original prosthesis components. The component includes features such as projections and openings that can engage with various prosthesis features, making it a universal interface that secures attachment across different prosthesis systems while managing complexity through standardization of the coupling mechanism.
Data Source
AI summary
In some embodiments, a surgical method includes creating an incision in a patient, exposing a multi-component prosthesis implanted in a patient, disassembling at least one component of the multi-component prosthesis, and coupling a first revision implant component to a first component of the multi-component prosthesis. The revision implant component has a body including at least one of a projection or an opening that is complementary to a feature of the first component of the multi-component prosthesis for coupling the revision implant component to the first component of the multi-component prosthesis.