Comparison of polyethylene wear in anatomical and reversed shoulder prostheses.

Détails

ID Serval
serval:BIB_50E016F60BBD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Comparison of polyethylene wear in anatomical and reversed shoulder prostheses.
Périodique
Journal of Bone and Joint Surgery. British volume
Auteur(s)
Terrier A., Merlini F., Pioletti D.P., Farron A.
ISSN
0301-620X
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
91
Numéro
7
Pages
977-982
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
Résumé
Wear of polyethylene is associated with aseptic loosening of orthopaedic implants and has been observed in hip and knee prostheses and anatomical implants for the shoulder. The reversed shoulder prostheses have not been assessed as yet. We investigated the volumetric polyethylene wear of the reversed and anatomical Aequalis shoulder prostheses using a mathematical musculoskeletal model. Movement and joint stability were achieved by EMG-controlled activation of the muscles. A non-constant wear factor was considered. Simulated activities of daily living were estimated from in vivo recorded data. After one year of use, the volumetric wear was 8.4 mm(3) for the anatomical prosthesis, but 44.6 mm(3) for the reversed version. For the anatomical prosthesis the predictions for contact pressure and wear were consistent with biomechanical and clinical data. The abrasive wear of the polyethylene in reversed prostheses should not be underestimated, and further analysis, both experimental and clinical, is required.
Mots-clé
Activities of Daily Living, Biomechanics, Equipment Failure Analysis, Humans, Joint Prosthesis/adverse effects, Models, Anatomic, Polyethylene/adverse effects, Prosthesis Design, Shoulder Joint/anatomy & histology, Shoulder Joint/physiopathology
Pubmed
Web of science
Création de la notice
18/01/2010 17:10
Dernière modification de la notice
03/03/2018 17:09
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