2003, Number 2
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Acta Ortop Mex 2003; 17 (2)
Effort determinations in the socket of a transtibial prosthesis by means of the finite-element method
Nieto-Miranda JJ, Carvajal-Romero MF, Urriolagoitia-Calderón G , Hernández-Gómez LH, Minor-Martínez A
Language: Spanish
References: 14
Page: 89-93
PDF size: 58.31 Kb.
ABSTRACT
A three-dimensional model of a socket of a transtibial prosthesis was development by finite element. The geometry is determines by 25 tranvers cuts practiced to the socket, manufactured in polyester resin, reproduced of the stump of a apparently healthy masculine volunteer, 37 years, 1.74 m, 83.4 kg. Once digitized the cuts, fed the data obtained to the Ansys version 5.5 software (Ansys Inc.). Finite element model consists of 2,450 elements and 5,251 nodal points. Properties were obtained of the specialized literature, the conditions of load and frontier were obtained of the volunteer, considering their characteristics anthropometric. In the interface stump/socket, was considered four positions of dorsiflexion of the socket. Von Mises stress patterns generated in each position were obtained, we can establish the role of the dorsiflexion in the generation and transmission of stress in the interface stump/socket. Finite-element-model will serve as a reference to study the diverse materials used in the construction of different types of socket
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