TY - JOUR
T1 - Mechanics of total ankle replacement during flexion in relation to geometrical design
T2 - A finite element study
AU - Taqayuddin, Muhammad Ajmal Mohd
AU - Anuar, Mohd Afzan Mohd
AU - Shuib, Solehuddin
AU - Mohamed, Zulkifli
AU - Majeed, Anwar P.P.Abdul
N1 - Funding Information:
This work was funded by Universiti Teknologi MARA (UiTM) under Bestari Perdana Research Grant (600-IRMI/DANA 5/3 BESTARI (P) (058/2018).
Publisher Copyright:
© 2018 Authors.
PY - 2018
Y1 - 2018
N2 - Total ankle replacement (TAR) procedure is carried out to reduce the pain due to arthritis and trauma in patients. The failure of TAR implants occurs through various wear mechanisms in the polyethylene due to high ankle load, leads to instability as well as loosening problem. The objective of this project is to assess the performance of Salto Talaris (TAR) implants before and after design modification. In the present study, the computational model of Salto Talaris and the modified design was developed using CATIA V5R20 while the finite element analysis (FEA) was performed in ANSYS V18. The results have shown that the maximum von Mises stress induced in the polyethylene insert for Salto Talaris and the new design were 13.9 MPa and 8.7 MPa, respectively, with applied 880 N of axial ankle load. The modified version exhibited better performance due to elimination of edge loading with good contact area. Design modification is essential to lower the stress induced at PE insert, hence reduce the failure of TAR prosthesis.
AB - Total ankle replacement (TAR) procedure is carried out to reduce the pain due to arthritis and trauma in patients. The failure of TAR implants occurs through various wear mechanisms in the polyethylene due to high ankle load, leads to instability as well as loosening problem. The objective of this project is to assess the performance of Salto Talaris (TAR) implants before and after design modification. In the present study, the computational model of Salto Talaris and the modified design was developed using CATIA V5R20 while the finite element analysis (FEA) was performed in ANSYS V18. The results have shown that the maximum von Mises stress induced in the polyethylene insert for Salto Talaris and the new design were 13.9 MPa and 8.7 MPa, respectively, with applied 880 N of axial ankle load. The modified version exhibited better performance due to elimination of edge loading with good contact area. Design modification is essential to lower the stress induced at PE insert, hence reduce the failure of TAR prosthesis.
KW - Finite element analysis
KW - Polyethylene insert
KW - Total ankle replacement
KW - Von Mises stress
UR - http://www.scopus.com/inward/record.url?scp=85056725036&partnerID=8YFLogxK
U2 - 10.14419/ijet.v7i4.11.20690
DO - 10.14419/ijet.v7i4.11.20690
M3 - Article
AN - SCOPUS:85056725036
SN - 2227-524X
VL - 7
SP - 70
EP - 72
JO - International Journal of Engineering and Technology(UAE)
JF - International Journal of Engineering and Technology(UAE)
IS - 4
ER -