Importance of polyethylene thickness in total shoulder arthroplasty: a finite element analysis.

Détails

ID Serval
serval:BIB_C74B4007C48B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Importance of polyethylene thickness in total shoulder arthroplasty: a finite element analysis.
Périodique
Clinical Biomechanics
Auteur(s)
Terrier A., Brighenti V., Pioletti D.P., Farron A.
ISSN
1879-1271 (Electronic)
ISSN-L
0268-0033
Statut éditorial
Publié
Date de publication
2012
Volume
27
Numéro
5
Pages
443-448
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
BACKGROUND: Articular surfaces reconstruction is essential in total shoulder arthroplasty. Because of the limited glenoid bone support, thin glenoid component could improve anatomical reconstruction, but adverse mechanical effects might appear. METHODS: With a numerical musculoskeletal shoulder model, we analysed and compared three values of thickness of a typical all-polyethylene glenoid component: 2, 4 (reference) and 6mm. A loaded movement of abduction in the scapular plane was simulated. We evaluated the humeral head translation, the muscle moment arms, the joint force, the articular contact pattern, and the polyethylene and cement stress. Findings Decreasing polyethylene thickness from 6 to 2mm slightly increased humeral head translation and muscle moment arms. This induced a small decreased of the joint reaction force, but important increase of stress within the polyethylene and the cement mantel. Interpretation The reference thickness of 4mm seems a good compromise to avoid stress concentration and joint stuffing.
Mots-clé
Biocompatible Materials/chemistry, Equipment Failure Analysis, Finite Element Analysis, Humans, Joint Prosthesis, Muscle Contraction, Muscle, Skeletal/physiopathology, Polyethylene/chemistry, Prosthesis Design, Range of Motion, Articular, Shoulder Joint/physiopathology
Pubmed
Web of science
Création de la notice
29/06/2012 18:40
Dernière modification de la notice
03/03/2018 21:19
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