In vivo fracture of a reverse total shoulder replacement humeral tray: A case report

Autor:	Trevor C. Gascoyne, Peter B. MacDonald, Eric Bohm, Martin J. Petrak
Rok vydání:	2016
Předmět:	Orthodontics medicine.medical_specialty Materials science Mechanical Engineering Fatigue testing General Medicine Surgery Tray medicine Trunnion Implant Reverse total shoulder replacement Fillet (mechanics) Stress concentration
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 230:1141-1147
ISSN:	2041-3033 0954-4119
DOI:	10.1177/0954411916676217
Popis:	Failure analysis was performed for two humeral tray components which fractured in vivo after only 6 and 9 months. Implant retrieval analysis indicated that the components failed due to fatigue failure initiating from a small radius fillet at the interface of the trunnion and tray regions. Finite element simulations revealed the small radius fillet to have resulted in a large stress concentration and confirmed the possibility for fatigue failure in 6 months. The stress concentration caused by both the small radius fillet and the insufficient tray thickness contributed to the premature fatigue failure of the humeral trays.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4d490e0e1135962b9db3cd9cdc4f1975 https://doi.org/10.1177/0954411916676217 Zobrazit plný text záznamu