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Ankle syndesmotic instability assessment using a three-dimensional distance mapping algorithm: a cadaveric pilot WBCT study
Journal article   Open access   Peer reviewed

Ankle syndesmotic instability assessment using a three-dimensional distance mapping algorithm: a cadaveric pilot WBCT study

Kevin Dibbern, Grayson Talaski, Eli Schmidt, Ryan Jasper, Vineel Mallavarapu, Matthew Jones, Hannah Stebral, Andrew Behrens, Kepler Alencar Mendes de Carvalho, Ki Chun Kim, …
Journal of the Foot & Ankle, Vol.16(3), pp.190-194
12/20/2022
DOI: 10.30795/jfootankle.2022.v16.1673
url
https://doi.org/10.30795/jfootankle.2022.v16.1673View
Published (Version of record) Open Access

Abstract

Objective: This cadaveric pilot study was to develop a weight bearing computed tomography (WBCT) three-dimensional (3D) distance mapping algorithm that would allow for detection of syndesmotic instability. Methods: Pilot study, two cadaveric specimens. Syndesmotic instability was induced by release of all syndesmotic ligaments through a conventional lateral ankle approach. WBCT imaging under simulated weight bearing was acquired before and after syndesmotic destabilization. Syndesmotic incisura and ankle gutter distances were assessed using a 3D distance mapping WBCT algorithm. Results: We found increases in the overall mean syndesmotic distances in the injured syndesmosis when compared to pre-injury state, and color coded distance maps allowed easy interpretation of the syndesmotic widening following ligament sectioning and destabilization of the syndesmotic joint. Conclusion: The WBCT 3D distance mapping algorithm has the potential to allow detection of mild syndesmotic instability with a relatively ease of interpretation by using color-coded distance maps. Level of Evidence V; Cadaveric Study.

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