Micromotion analysis of the head-neck interface of a PEEK artificial hip prosthesis. (27th September 2019)

• Record Type: Journal Article
• Authors: Xu, Handong; Zhang, Dekun; Chen, Kai; Zhang, Xinyue
• Is Part Of: Materials research express. Volume 6:Number 11(2019)
• Publication Date: 2019-09-27
• Subjects: total hip replacement -- head-neck interface -- PEEK -- micromotion -- finite element analysis -- ANSYS®; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab454b
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: PEEK has been gradually recommended in recent years as a metal substitute for artificial joint replacement. However, the risk of fretting of the PEEK artificial hip prosthesis in the head-neck interface cannot be ignored. In this study, PEEK was used as the head material, CoCrMo as the contrast material, Ti6Al4V as the neck material, and XLPE as the liner material. The micromotion analysis of the head-neck interface was carried out by a finite element method. The results show that the PEEK artificial hip prosthesis is more likely than the traditional metal artificial hip prosthesis to produce a large micromotion (62 μ m) in the head-neck interface and therefore requires a greater impaction load. The PEEK artificial hip prosthesis is more suitable for patients with lighter weight, and a proper reduction in the walking stride can significantly reduce the micromotion of the head-neck interface. Flexion/extension has the greatest effect on micromotion in the hip motion, while inward/outward rotation has the least effect. Inserting the CoCrMo taper sleeve into the neck of the PEEK artificial hip prosthesis can effectively reduce the micromotion of the head-neck interface.