A statistical shape model to predict the premorbid glenoid cavity.

Détails

ID Serval
serval:BIB_50EC0286EA3D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A statistical shape model to predict the premorbid glenoid cavity.
Périodique
Journal of shoulder and elbow surgery
Auteur(s)
Abler D., Berger S., Terrier A., Becce F., Farron A., Büchler P.
ISSN
1532-6500 (Electronic)
ISSN-L
1058-2746
Statut éditorial
Publié
Date de publication
10/2018
Peer-reviewed
Oui
Volume
27
Numéro
10
Pages
1800-1808
Langue
anglais
Notes
Publication types: Journal Article ; Validation Studies
Publication Status: ppublish
Résumé
This study proposes a method for inferring the premorbid glenoid shape and orientation of scapulae affected by glenohumeral osteoarthritis (OA) to inform restorative surgery.
A statistical shape model (SSM) built from 64 healthy scapulae was used to reconstruct the premorbid glenoid shape based on anatomic features that are considered unaffected by OA. First, the method was validated on healthy scapulae by quantifying the accuracy of the predicted shape in terms of surface distance, glenoid version, and inclination. The SSM-based reconstruction was then applied to 30 OA scapulae. Glenoid version and inclination were measured fully automatically and compared between the original OA glenoids, SSM-based glenoid reconstructions, and healthy scapulae.
Validation on healthy scapulae showed a root-mean-square surface distance between original and predicted glenoids of 1.0 ± 0.2 mm. The prediction error was 2.3° ± 1.8° for glenoid version and 2.1° ± 2.0° for inclination. When applied to an OA dataset, SSM-based reconstruction restored average glenoid version and inclination to values similar to the healthy situation. No differences were observed between average orientation values measured on SSM-based reconstructed and healthy scapulae (P ≥ .10). However, the average orientation of the reconstructed premorbid glenoid differed from the average orientation of OA glenoids for Walch classes A1 (version) and B2 (version, inclination, and medialization).
The proposed SSM can predict the premorbid glenoid cavity of healthy scapulae with millimeter accuracy. This technique has the potential to reconstruct the premorbid glenoid cavity shape, as it was prior to OA, and thus to guide the positioning of glenoid implants in total shoulder arthroplasty.
Mots-clé
Adolescent, Adult, Aged, Aged, 80 and over, Arthroplasty, Replacement, Shoulder, Computer Simulation, Female, Glenoid Cavity/anatomy & histology, Glenoid Cavity/diagnostic imaging, Humans, Imaging, Three-Dimensional, Male, Middle Aged, Models, Anatomic, Models, Statistical, Osteoarthritis/diagnostic imaging, Osteoarthritis/pathology, Scapula/diagnostic imaging, Tomography, X-Ray Computed, Young Adult, 3D reconstruction, Glenoid, computed tomography, inclination, statistical shape model, total shoulder arthroplasty, version
Pubmed
Web of science
Création de la notice
07/08/2018 13:15
Dernière modification de la notice
20/08/2019 14:06
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