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Informations générales |
| Auteur |
Ma, Wenhui; Zhang, Xuemin; Zhang, Yingze |
| Publié |
InTech Open Access Publisher, 2013
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| Abstract |
The purpose of this study was to evaluate the
design of a cup using finite element method and to
analyze possible effects of joint loading postoperatively,
and its initial mechanical stability, so as to direct its
further optimization.
Finite‐element (FE) models of the cup with three wings
and the hemispherical cup were created to calculate the
stress patterns during a normal gait cycle. The stress in
the acetabular components were analyzed and compared.
The FE analysis demonstrated that all kinds of acetabular
components had the same trend for stress and strain. The
stress of the wings increased gradually from rim to root.
Its peak stress was significantly lower than the yield force
of the Co‐Cr‐Mo alloy at the joint between the wing and
the shell. The graft portion near the acetabular
component was subjected to higher stress conditions. The
contact stresses were found to be decreased with a
reduced abduction angle of wings. The cup with wings of
abduction angle of 15° had lower stresses compared with
other cups.
The cup with wings is a reliable option for the reconstruction
of the acetabulum with extensive bone socket defects. The
reduced abduction angle of wings helps to decrease the
stress of the cup with wings. The FE analysis is a useful tool
with which to address these issues. |
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International Journal of Advanced Robotic Systems
Auteur: Ottaviano, Erika; Ceccarelli, Marco; Husty, Manfred; Yu, Sung-Hoon; Kim, Yong-Tae; Park, Chang-Woo; Hyun, Chang-Ho; Chen, Xiulong; Feng, Weiming; Sun, Xianyang; Gao, Qing; Grigorescu, Sorin M.; Pozna, Claudiu; Liu, Wanli; Zhankui, Wang; Guo, Meng; Fu, Guoyu; Zhang, Jin; Chen, Wenyuan; Peng, Fengchao; Yang, Pei; Chen, Chunlin; Ding, Rui; Yu, Junzhi; Yang, Qinghai; Tan, Min; Polden, Joseph; Pan, [...]
Publié: 2004
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