Accuracy and Precision Evaluation of Image-Based Computer Assisted Surgical System for Total Ankle Arthroplasty

Description

This presentation from the ISTA 2024 conference held in Nashville covers a research study on a newly developed navigation system for total ankle arthroplasty (TAA), aimed at addressing the issue of ankle osteoarthritis. The speaker, Matt Rueff, discusses the problem's background, highlighting that ankle osteoarthritis, while less common than hip and knee osteoarthritis, significantly affects the quality of life, particularly in younger patients with post-traumatic cases. The presentation details the challenges surgeons face in aligning implants during TAA due to limited visibility and the reliance on fluoroscopy.



The research employs a computer-aided surgical system that utilizes optical navigation to improve the accuracy of implant positioning without heavy dependence on fluoroscopy. The study's methodology includes testing on synthetic foot models and a high-precision 3D scanner to analyze resection accuracy. Results generally show that the navigation system is effective, achieving a mean signed overall error of less than 2 millimeters and 2 degrees, indicating satisfactory performance when compared to patient-specific guides.



Conclusion statements summarize that while the system presents advantages, further validation with cadaver specimens and a larger cohort of surgeons is planned to enhance reliability and applicability of the navigation technology in surgical settings. The engaging session concludes with a Q&A, prompting discussions about the study's limitations and future directions.

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