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Développement et validation d’une méthode d’évaluation destranslations glénohumérales 3d sous EOS(mc)

Abstract : Precise morpho-functional analysis of the shoulder, including of the glenohumeral (GH) joint, would allow improving our understanding of shoulder dysfunction associated to rotator cuff tears. However, technical difficulties make analysis of shoulder morphology and motion difficult in a clinical setting. The work carried out during this thesis allowed developing a method for 3D analysis of GH translations relying on the acquisition of sequences of biplanar radiographs with the EOS™ system. A pilot study carried out on 10 healthy subjects allowed verifying the ease of application of an image acquisition protocol and evaluating the repeatability of shoulder landmark identification on the radiographs. The final proposed method allows, following the acquisition of radiographs, obtaining a personalized morphologically realistic reconstruction of the scapula and a simplified model of the humerus. These models are then interactively registered to the images acquired at different arm positions and used to describe GH translations for these positions. The proposed method was validated in terms of precision and repeatability on images acquired of cadaveric shoulders and of patients with rotator cuff tears. The last part of the work presented here consists in applying the developed method to 30 subjects (25 patients and 5 asymptomatic subjects) for whom rotator cuff condition and shoulder function were assessed, and to study correlations between GH translations and shoulder function.
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  • HAL Id : pastel-00841439, version 1

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Pierre-Yves Lagacé. Développement et validation d’une méthode d’évaluation destranslations glénohumérales 3d sous EOS(mc). Autre. Ecole nationale supérieure d'arts et métiers - ENSAM, 2012. Français. ⟨NNT : 2012ENAM0059⟩. ⟨pastel-00841439⟩

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