FINITE ELEMENT ANALYSIS OF THE POROUS COATING IN HIP-JOINT PROSTHESIS

Nikitsin A.V., Graduate Student of the Department of Bio- and Nanomechanics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
Mikhasev G.I., Doctor of Physical and Mathematal Sciences, Professor, Head of the Department of Bio- and Nanomechanics, Belarusian State University, Minsk, Republic of Belarus
Maslov A.P., Candidate of Medical Sciences, Head of the Orthopedic and Trauma Unit no. 1, Minsk Regional Clinical Hospital, Minsk, Republic of Belarus

The finite element model of the cementless femoral stem was used to calculate the main stresses of the bone-implant interface. Assuming the rigid contact between porous coating and bone tissue, three different implant designs were analyzed: smooth shape implant, implant with two porous inserts and when 2/3 of the implant was coated by the porous titanium. Results showed that enlargement of the porous coating increases the stresses within proximal femur and reduces the stresses in diaphysis.

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