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- Talk
- 30/08/2024
- USA
Titanium - Titanium Junctions in the Knee Corrode, Generating Damage Modes Identified in the Hip
Description
This presentation from the ISTA Nashville 2024 symposium, focuses on the investigation of corrosion damage patterns observed in total knee arthroplasty implants, particularly during revision surgeries. The speaker discusses findings from previous studies that highlighted stress cracking corrosion and hydrogen embrittlement in titanium components, referencing the work of Dr. Steve Kurtz. They explore whether similar corrosion mechanisms are present in knee implants compared to documented issues in hip implants. The study analyzes 50 paired titanium tibial base plates and stems, scoring corrosion levels using the Goldberg corrosion scoring system.
Images presented show varying degrees of corrosion in the implants, revealing moderate to severe oxidized areas and consequently, mechanical corrosion damage. The analysis includes detailed micrograph examinations using scanning electron microscopy, identifying oxide films and crevice corrosion. The research indicates a strong correlation between damage patterns across the taper interfaces in both stems and bore components.
As results indicate high percentages of corrosion presence, the presentation emphasizes the identification of damage modes such as pitting, selective dissolution, and oxidation. Future research avenues are proposed, targeting mixed tapered junctions to further unravel the corrosion mechanisms at play. The talk concludes with an invitation for questions, reflecting a collaborative research environment.