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- Title
Axial Rotation Analysis in Total Ankle Arthroplasty Using Weight-Bearing Computer Tomography and Three-Dimensional Modeling.
- Authors
Efrima, Ben; Barbero, Agustin; Ovadia, Joshua; Indino, Cristian; Maccario, Camilla; Usuelli, Federico Giuseppe
- Abstract
Introduction/Purpose: Post-operative alignment is the most critical indicator for a successful total ankle arthroplasty (TAA). Total ankle malrotation is associated with an increased risk for polyethylene wear and medial gutter pain. Currently, there is no consensus on the correct way to measure the alignment of the tibial and talar component rotations in the axial plane. In the current study, the post-operative analysis system was assessed using weight-bearing computer tomography and a threedimensional (3D) model. The purpose of the study was to assess the inter-observer and intra-observer agreement of this system. Methods: Four angles were measured by two raters independently in two separate readings: posterior tibial component rotation angle (PTIRA), posterior talar component rotation angle (PTARA), tibia talar component axial angle (TTAM), and tibial component to the second metatarsal angle (TMRA). Agreement analysis was quantified according to the interclass coefficient. Results: Sixty TAAs across 60 patients were evaluated. A good inter-observer agreement and intra-observer agreement when measuring the PTIRA, PTARA, and TTAM angles was observed along with an excellent inter-observer agreement and intraobserver agreement when measuring the TMRA angle. Conclusion: In conclusion, the current 3D model-based measurement system demonstrates good to excellent inter and intraagreement. According to these results, 3D modelling can be reliably used to measure and assess the axial rotation of TAA components.
- Subjects
FLORIDA; ANKLE physiology; WEIGHT-bearing (Orthopedics); THREE-dimensional imaging; TOTAL ankle replacement; COMPUTED tomography; CONFERENCES &; conventions; ROTATIONAL motion
- Publication
Foot & Ankle Orthopaedics, 2024, Vol 9, Issue 2, p1
- ISSN
2473-0114
- Publication type
Article
- DOI
10.1177/2473011424S00051