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Licensed Unlicensed Requires Authentication Published by De Gruyter March 3, 2022

Static, fatigue and stress-shielding analysis of the use of different PEEK based materials as hip stem implants

Mustafa Guven Gok


There is a possibility that hip joints may become dysfunctional due to age, wear or some accidents, and in this case they need to be replaced with hip implants. However, after conventional hip stem implantation, the load transferred to the bone usually decreases due to the high stiffness of the metallic (most commonly Ti6Al4V, CoCr or stainless steel) hip stem implant, and as a result, mineral loss occurs in the bone which weakens. On the other hand, PEEK is an advantageous material with its low cost, ease of production, corrosion resistance and biocompatibility. More importantly, it has the potential to be a good alternative to metallic materials in load-bearing bone replacements, thanks to its mechanical properties and density close to that of the bone. In this study, hip stem implants having three different commercial PEEK materials and four different metallic main spar designs were modeled. Their behavior under static and dynamic loading conditions was analyzed according to ASTM-F2996-20 and ISO-7206-4:2010 standard test methods, and the stress-shielding effect of hip stems modeled as implanted into the femur was simulated using ANSYS commercial finite element analysis software. According to the results, it was observed that CFP based hip stem models meet the five million life time criteria and increase the stress on the femur bone by up to 57%.

Corresponding author: Mustafa Guven Gok, Department of Material Science and Engineering, Hakkari University, Hakkari, Turkey, E-mail:


The author would like to thank the Istanbul Technical University Information Technologies Directorate for permission the use of the softwares.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


Anguiano-Sanchez, J., Martinez-Romero, O., Siller, H.R., Diaz-Elizondo, J.A., Flores-Villalba, E., and Rodriguez, C.A. (2016). Influence of PEEK coating on hip implant stress shielding: a finite element analysis. Comput. Math. Methods Med. 2016: 1–10, in Google Scholar

Bah, M.T. (2016). Joined at the hip. ANSYS Adv. 1–3.Search in Google Scholar

Cavalu, S., Ratiu, C., Ponta, O., Simon, V., Rugina, D., Miclaus, V., Akin, I., and Goller, G. (2014). Improving osseointegration of alumina/zirconia ceramic implants by fluoride surface treatment. Dig. J. Nanomater. Biostruct. 9. 797–808.Search in Google Scholar

Çelik, T., Mutlu, İ., Özkan, A., and Kişioğlu, Y. (2017). The effect of cement on hip stem fixation: a biomechanical study. Australas. Phys. Eng. Sci. Med. 40: 349–357, in Google Scholar

Center, J.R., Nguyen, T.V., Pocock, N.A., and Eisman, J.A. (2004). Volumetric bone density at the femoral neck as a common measure of hip fracture risk for men and women. J. Clin. Endocrinol. Metab. 89: 2776–2782, in Google Scholar

Chethan, K.N., Mohammad, Z., Bhat, S., Shenoy, S., and Kini, C. (2019). Static structural analysis of different stem designs used in total hip arthroplasty using finite element method. Heliyon 5: e01767, in Google Scholar

Chethan, K.N., Satish Shenoy, B., and Shyamasunder Bhat, N. (2018) Role of different orthopedic biomaterials on wear of hip joint prosthesis: a review. Mater. Today Proc. 5: 20827–20836, in Google Scholar

Costa, R.R.C.D., Biagi De Almeida, F.R., Xavier Da Silva, A.A., Domiciano, S.M., and Costa Vieira, A.F. (2019). Design of a polymeric composite material femoral stem for hip joint implant. Polimeros 29(4): 1–8, in Google Scholar

Cross, M.J. and Spycher, J. (2008). 9 – Cementless fixation techniques in joint replacement. In: Revell, P.A. (Eds.), Joint replacement technology (Woodhead Publishing series in biomaterials), Woodhead Publishing, Sawston, 190–211.10.1533/9781845694807.2.190Search in Google Scholar

Currey, J.D. and G. Butler (1975). The mechanical properties of bone tissue in children. J. Bone Joint Surg. Am. 57: 810–814, in Google Scholar

Darwich, A., Nazha, H., and Daoud, M. (2020). Effect of coating materials on the fatigue behavior of hip implants: a three-dimensional finite element analysis. J. Appl. Comput. Mech. 6: 284–295, in Google Scholar

Erickson, G.M., Catanese, J., and Keaveny, T.M. (2002). Evolution of the biomechanical material properties of the femur. Anat. Rec. 268: 115–124, in Google Scholar

Garcia-Gonzalez, D., Rodriguez-Millan, M., Rusinek, A., and Arias, A. (2015). Investigation of mechanical impact behavior of short carbon-fiber-reinforced PEEK composites. Compos. Struct. 133: 1116–1126, in Google Scholar

Huiskes, R., Weinans, H., and Van Rietbergen, B. (1992). The relationship between stress shielding and bone resorption around total hip stems and the effects of flexible materials. Clin. Orthop. Relat. Res. 274: 124–134, in Google Scholar

Joshi, M.G., Advani, S.G., Miller, F., and Santare, M.H. (2000). Analysis of a femoral hip prosthesis designed to reduce stress shielding. J. Biomech. 33: 1655–1662, in Google Scholar

Kashan, J.S. and Ali, S.M. (2019). Modeling and simulation for mechanical behavior of modified biocomposite for scaffold application. Ing. Invest. 39: 63–75, in Google Scholar

Kosei, F. and Mitsugu, T. (2018). Analysis of principal stress projection in femur with total hip arthroplasty using CT-image based finite element method. Int. Arch. Orthopedic Surg. 1: 1–10, in Google Scholar

Kurtz, S.M. (Hrsg.) (2012). PEEK biomaterials handbook. Elsevier, Waltham.Search in Google Scholar

Kurtz, S.M., Day, J., and Ong, K. (2012). Isoelastic polyaryletheretherketone implants for total joint replacement. In: Kurtz, S.M. (Hrsg.), PEEK biomaterials handbook, 221–242. Elsevier, Waltham.10.1016/B978-1-4377-4463-7.10014-4Search in Google Scholar

Maharaj, P.S.R.S., Maheswaran, R., and Vasanthanathan, A. (2013). Numerical analysis of fractured femur bone with prosthetic bone plates. Proc. Eng. 64: 1242–1251, in Google Scholar

Nakahara, I., Takao, M., Bandoh, S., Bertollo, N., Walsh, W.R., and Sugano, N. (2013). In vivo implant fixation of carbon fiber-reinforced PEEK hip prostheses in an ovine model. J. Orthop. Res. 31: 485–492, in Google Scholar

Pan, N. (1924). Length of long bones and their proportion to body height in hindus. J. Anat. 58: 374–378.Search in Google Scholar

Ridzwan, M.I.Z., Shuib, S., Hassan, A.Y., Shokri, A.A., and Ibrahim, M.N.M. (2007). Problem of stress shielding and improvement to the hip implant designs: a review. J. Med. Sci. 7(3): 460–467, in Google Scholar

Sabatini, A.L. and T. Goswami (2008). Hip implants VII: finite element analysis and optimization of cross-sections. Mater. Des. 29: 1438–1446, in Google Scholar

Saito, N., Aoki, K., Usui, Y., Shimizu, M., Hara, K., Narita, N., Ogihara, N., Nakamura, K., Ishigaki, N., Kato, H., et al.. (2011). Application of carbon fibers to biomaterials: a new era of nano-level control of carbon fibers after 30-years of development. Chem. Soc. Rev. 40: 3824–3834, in Google Scholar

Samborsky, D.D., Wilson, T.J., and Mandell, J.F. (2009). Comparison of tensile fatigue resistance and constant life diagrams for several potential. J. Sol. Energy Eng. 131. 1–10, in Google Scholar

Senalp, A.Z., Kayabasi, O., and Kurtaran, H. (2007). Static, dynamic and fatigue behavior of newly designed stem shapes for hip prosthesis using finite element analysis. Mater. Des. 28: 1577–1583, in Google Scholar

Vrancken, B., Thijs, L., Kruth, J.-P., and Van Humbeeck, J. (2012). Heat treatment of Ti6Al4V produced by selective laser melting: microstructure and mechanical properties. J. Alloys Compd. 541: 177–185, in Google Scholar

Weinans, H., Sumner, D.R., Igloria, R., and Natarajan, R.N. (2000). Sensitivity of periprosthetic stress-shielding to load and the bone density-modulus relationship in subject-specific finite element models. J. Biomech. 33: 809–817, in Google Scholar

Wonderly, C., Grenestedt, J., Fernlund, G., and Cepus, E. (2005). Comparison of mechanical properties of glass fiber/vinyl ester and carbon fiber/vinyl ester composites. Composites, Part B 36: 417–426, in Google Scholar

Yang, M., Li, C., Zhang, Y., Jia, D., Zhang, X., Hou, Y., Shen, B., and Li, R. (2018). Microscale bone grinding temperature by dynamic heat flux in nanoparticle jet mist cooling with different particle sizes. Mater. Manuf. Process. 33: 58–68, in Google Scholar

Received: 2021-05-20
Accepted: 2021-12-12
Published Online: 2022-03-03
Published in Print: 2022-05-25

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