Mechanical evaluation of a new minimally invasive device for stabilization of proximal humeral fractures in elderly patients : a cadaver study
Data(s) |
2007
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Resumo |
BACKGROUND: Treatment of proximal humerus fractures in elderly patients is challenging because of reduced bone quality. We determined the in vitro characteristics of a new implant developed to target the remaining bone stock, and compared it with an implant in clinical use. METHODS: Following osteotomy, left and right humeral pairs from cadavers were treated with either the Button-Fix or the Humerusblock fixation system. Implant stiffness was determined for three clinically relevant cases of load: axial compression, torsion, and varus bending. In addition, a cyclic varus-bending test was performed. RESULTS: We found higher stiffness values for the humeri treated with the ButtonFix system--with almost a doubling of the compression, torsion, and bending stiffness values. Under dynamic loading, the ButtonFix system had superior stiffness and less K-wire migration compared to the Humerusblock system. INTERPRETATION: When compared to the Humerusblock design, the ButtonFix system showed superior biomechanical properties, both static and dynamic. It offers a minimally invasive alternative for the treatment of proximal humerus fractures. |
Identificador | |
Publicador |
Taylor & Francis |
Relação |
DOI:10.1080/17453670710014031 Duda, Georg N., Epari, Devakara R., Babst, Reto, Lambert, Simon, Matthys, Romano, & Südkamp, Norbert (2007) Mechanical evaluation of a new minimally invasive device for stabilization of proximal humeral fractures in elderly patients : a cadaver study. Acta Orthopaedica, 78(3), p. 430. |
Direitos |
Copyright 2007 Taylor & Francis |
Fonte |
Faculty of Built Environment and Engineering; Institute of Health and Biomedical Innovation; School of Engineering Systems |
Palavras-Chave | #090300 BIOMEDICAL ENGINEERING |
Tipo |
Journal Article |