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- Talk
- 15/06/2021
- Canada
Correction of Talar Sagittal Alignment Using a Novel Biased Polyethylene Insert for a Fixed Bearing Total Ankle Arthroplasty
Description
In a presentation led by clinical orthopedic fellow Sahil Kooner at the University of Toronto, a research paper titled "Correction of Talar Sagittal Alignment Using a Novel Biased Polyethylene Insert for a Fixed Bearing Total Ankle Arthroplasty" was discussed. The study addresses the issue of end-stage ankle arthritis, which often involves both coronal and sagittal plane deformities. While coronal plane instability has received significant attention, the equally prevalent issue of sagittal deformity is highlighted as a critical area needing correction during ankle surgeries.
The presentation details how failure to restore proper sagittal alignment during total ankle arthroplasty can lead to negative outcomes including reduced range of motion and increased pressure on the feet. Current treatment methods mainly focus on soft tissue reconstructions, which may not always provide the desired stability. The new Integra Total Ankle system features unique biased polyethylene liners designed to counteract these issues by maintaining proper sagittal alignment throughout the gait cycle.
The research focuses on a retrospective case series involving 66 total ankles from 65 patients who underwent surgery with the biased liner, assessing improvements in the talar translation ratio and talar station. The results demonstrate significant post-operative improvements in alignment for patients, particularly those with anterior or neutral preoperative alignment, effectively doubling the proportion achieving neutral alignment.
In summary, the study suggests that the use of biased polyethylene liners may enhance clinical outcomes during total ankle arthroplasties, calling for further investigations to determine precise indications and long-term effects of these liners in treatment protocols for sagittal plane deformities.