Asymmetric Talar Bone Plate for Revision Alignment and Compression
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Solution Overview
Problem
Existing total joint replacement technologies face challenges in approximating the function and structure of natural joints, particularly in talar bone reconstruction, especially during revision procedures, where existing implants fail to provide adequate stabilization and alignment.
Innovation Solution
A talar bone plate designed to span across the navicular-talar joint or stabilize talar neck fractures, featuring an elongated screw hole for directional compression and a tapered head to engage a talar dome implant, allowing for precise alignment and stabilization of the navicular-talus joint or fracture reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing implants are used for talar bone reconstruction, then the surgical procedure can be performed, but adequate stabilization and alignment cannot be achieved
Solution Approach 1:
The bone plate is divided into multiple sections with different geometries: a first portion for engaging the talar dome component and a second portion for engaging the talar bone, allowing each section to be optimized for its specific function and achieve both stabilization and alignment
Solution Approach 2:
Different portions of the bone plate have different structural characteristics - the first portion has a configuration optimized for engaging the talar dome component while the second portion has a configuration optimized for engaging the talar bone, providing localized adaptation for both stabilization and alignment requirements
2Manufacturing precision
If a standard bone plate design is used, then manufacturing is simple, but precise alignment and directional compression cannot be achieved
Solution Approach 1:
The bone plate features an asymmetric tapered geometry with a first portion and a second portion having different configurations, enabling precise alignment and directional compression while remaining manufacturable through standard orthopedic implant processes
3Reliability
If revision procedures are performed with existing implants, then the prosthesis can be replaced, but adequate stabilization of the talar bone cannot be achieved
Solution Approach 1:
The bone plate is designed as a multi-functional revision implant that can engage both the talar dome component and the talar bone simultaneously, providing stabilization and alignment capabilities in a single device that is suitable for revision procedures
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 1E~1F
AI summary
A talar bone plate for use with a multi-component ankle prosthesis is disclosed that has a body having a medial side, a lateral side, an upper surface, a lower surface, a medial-anterior end, a lateral-anterior end, a medial-anterior portion that extends out in anterior direction beyond the lateral-anterior side, and a posterior side, where a length between the medial-anterior end and the posterior side is greater than the length between the lateral-anterior end and the posterior side near the lateral side of the body, where the body having at least one elongated screw hole provided in the medial-anterior portion and a plurality of screw holes provided in the area between the at least one elongated screw hole and the posterior side.