Load displacement simulation of CP-Ti/UHMWPE hip implant

Handoko Handoko, Suyitno Suyitno, Rini Dharmastiti, Rahadyan Magetsari


Hip implant made from titanium is special due to its lower modulus of elasticity to avoid stress shielding with the human bone. One type of load the material designed to withstand is a gradually increased compressive force which happened when the patient change his/her position from sitting to standing. This study examined the capability of a metal on polymer (MOP) implant made from commercially pure titanium (CP-Ti) and ultra-high molecular weight polyethylene (UHMWPE) loaded up to 3 kN according to ISO 14242 standard. Two CP-Ti/UHMWPE MOP models with femoral diameter of 22 mm and 32 mm were simulated with finite element. The results expressed in load displacement curves were validated with compressive load experimental tests. Both materials are capable to withstand the load. Simulation data are in good agreement with the experiments.

Full Text:



H. Kapstad, B.R. Hanestad, N. Langeland, T. Rustøen and K. Stavem, “Cutpoints for mild, moderate and severe pain in patients with osteoarthritis of the hip or knee ready for joint replacement surgery”, BMC Musculoskeletal Disorders 9(55), 1-9 (2008).

O.H. Brady, B.A. Masri, D.S. Garbuz, and C.P. Duncan, “Rheumatology: 10. Joint replacement of the hip and knee - when to refer and what to expect”, Canadian Medical Association Journal 163(10), 1285-1291 (2000).

L.E. Bayliss, D. Culliford, P.A. Monk, S. Glyn-Jones, D. Prieto-Alhambra, A. Judge, C. Cooper, A.J. Carr, N.K. Arden, D.J. Beard, and A.J. Price, “The effect of patient age at intervention on risk of implant revision after total replacement of the hip or knee: a population-based cohort study”, The Lancet 389(10077), 1424-1430 (2017).

D.P. Hoeffel, P.J. Daly, B.J. Kelly, M.R. Giveans, “Outcomes of the First 1,000 Total Hip and Total Knee Arthroplasties at a Same-day Surgery Center Using a Rapid-recovery Protocol”, J. American Academy of Orthopaedic Surgeons 3, e022 (2019).

M.I.Z. Ridzwan, S. Shuib, A.Y. Hassan, A.A. Shokri, and M.N.M. Ibrahim, “Problem of Stress Shielding and Improvement to the Hip Implat Designs: A Review”, J. Medical Science 7(3), 460-467 (2007).

S. Arabnejad, B. Johnston, M. Tanzer, and D. Pasini, “Fully porous 3D printed titanium femoral stem to reduce stress‐shielding following total hip arthroplasty”, J. Orthopaedic Research 35, 1774-1783 (2017).

National Center for Health Statistics, “Health, United States, 2014: With Special Feature on Adults Aged 55–64“ 287 (2015).

M. Lysaght, and T.J. Webster “Biomaterials for artificial organs“, Woodhead, 40 (2011).

W.D. Callister, and D.G. Rethwisch, “Fundamentals of materials science and engineering: an integrated approach“, John Wiley & Sons, 830-831 (2012).

R. Trebše, “Infected Total Joint Arthroplasty: The Algorithmic Approach”, Springer, 14-16 (2012).

M.A-H. Gepreel, and M. Niinomi, “Biocompatibility of Ti-alloys for long-term implantation” J. Mechanical Behavior of Biomedical Materials, 20, 410-411 (2013).

W.R. Zhou, and Y.F. Zheng, “Characterization of modified magnesium and magnesium alloys for biomedical applications” in T.S.N.S. Narayanan, I-S. Park, and M-H. Lee, “Surface Modification of Magnesium and its Alloys for Biomedical Applications. Volume 1: Biological Interactions, Mechanical Properties and Testing”, Elsevier (2015).

B. Eynard, V. Nigrelli, S.M. Oliveri, G. Peris-Fajarnes, and S. Rizzuti, “Advances on Mechanics, Design Engineering and Manufacturing”, Proc. Int. Joint Conference on Mechanics, Design Engineering & Advanced Manufacturing (JCM 2016), 14–16 September, 2016, Catania, Italy, Springer, 417 (2017).

M.M. Monif, “Finite element study on the predicted equivalent stresses in the artificial hip joint”, J. Biomedical Science and Engineering, 5, 44 (2012).

F.D. Puccio, and L. Mattei, “Biotribology of artificial hip joints”, World J. Orthop. 6, 77–94 (2015).

T. Röstlund, B. Albrektsson, T. Albrektsson, and H. McKellop, “Wear of ion-implanted pure titanium against UHMWPE Biomaterials”, Biomaterials, 10, 176–180 (1989).

R. Zdero, “Experimental Methods in Orthopaedic Biomechanics”, Academic Press (2016).

S.C. Tadepalli, A. Erdemir, and P.R. Cavanagh, “A Comparison of the Performance of Hexahedral and Tetrahedral Elements in Finite Element Models of the Foot”, ASME 2010 Summer Bioengineering Conference (2010).

R. Zdero, Z.S. Bagheri, M. Rezaey, E.H. Schemitsch, and H. Bougherara, “The Biomechanical Effect of Loading Speed on Metal-on-UHMWPE Contact Mechanics”, The open biomedical engineering journal, Bentham Open, 8, 28-34 (2014).

V.L. Popov, “Contact Mechanics and Friction: Physical Principles and Applications”, Springer-Verlag, 17 (2010).

Z. Sun, and C. Hao, “Conformal Contact Problems of Ball-socket and Ball”, 2012: Int. Conf. on Solid State Devices and Materials Science, Physics Procedia, 25, 209–214 (2012).

P. Flores, and H.M. Lankarani, “Contact Force Models for Multibody Dynamics”, Springer (2016).

B. Lorenz, “Contact Mechanics and Friction of Elastic Solids on Hard and Rough Substrates“, Forschungszentrum Jülich GmbH, 5-6 (2012).


  • There are currently no refbacks.

©2017 (onwards) Aliansi Fisikawan Medik Indonesia / Indonesian Association of Physicists in Medicine

Print ISSN: 2355-2727 | Online ISSN: 2355-2719