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Pop-top tibial component: elimination of back-side wear with potential modularity
Adolph V Lombardi1, Keith R Berend, Thomas H Mallory
1Joint Implant Surgeons, Inc., Department of Surgery, New Albany Surgical Hospital and Department of Orthopaedics, The Ohio State University, Columbus, Ohio, USA.
Surgical Technology International
|March 4, 2005
Summary
Total knee arthroplasty (TKA) shows excellent long-term success. A new convertible tibial component addresses concerns of polyethylene wear and backside wear, combining monoblock component success with modularity benefits.
Area of Science:
- Orthopedic surgery
- Biomaterials science
- Medical device engineering
Background:
- Cemented total knee arthroplasty (TKA) remains the gold standard for fixation.
- Polyethylene wear is a primary cause of TKA revision, linked to material quality, manufacturing, and articulation design.
- Direct compression-molded monoblock tibial components offer long-term success, but modularity aids soft-tissue balancing.
Purpose of the Study:
- To introduce a novel convertible tibial component for TKA.
- To combine the reliability of monoblock components with the flexibility of modularity.
- To mitigate issues related to polyethylene wear and backside wear in TKA.
Main Methods:
- Development of a convertible tibial component manufactured as a direct compression-molded monoblock device.
- Surgeons can convert the component to a modular device during surgery or later.
- Utilizes established manufacturing for monoblock components.
Main Results:
- The convertible tibial component provides a solution to address backside wear concerns.
- It offers surgeons the option of modularity when needed, enhancing intraoperative flexibility.
- Maintains the established benefits of direct compression-molded monoblock tibial components.
Conclusions:
- The convertible tibial component effectively addresses backside wear concerns in TKA.
- This innovation merges the durability of monoblock designs with the functional advantages of modularity.
- It represents a significant advancement in TKA implant technology, improving long-term survivorship potential.