Study of an Additional Layer of Cement Mantle Hip Joints for Reducing Cracks

• Published in: Journal of functional biomaterials Vol. 10; no. 3; p. 40
• Main Authors: Jamari, J, Saputra, Eko, Anwar, Iwan Budiwan, van der Heide, Emile
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 06-09-2019; MDPI
• Subjects: Acetabulum; additional layer; Biomedical materials; Cement; cement mantle; Cobalt; Contact stresses; Crack initiation; Finite element analysis; Finite element method; hip joint; liner; Material properties; Polymethyl methacrylate; Pressure distribution; Prostheses; Repeated loading; Simulation; Strain gauges; Titanium alloys; Total hip arthroplasty; additional layer; liner; cement mantle; hip joint
• ISSN: 2079-4983; 2079-4983
• DOI: 10.3390/jfb10030040

Failure of the cement mantle in total hip arthroplasty is not a simple phenomenon. Cracking, which can be caused by crack initiation and repeated loading, can cause loosening of the acetabular liner component. A previous study showed that addition of a metal layer between the liner and acetabular could reduce the stress at the contact surface of the cement mantle. This study elaborates on the performance of the additional layer. Several material properties of the layer were simulated using finite element analysis for maximum performance. A static contact analysis was used to simulate the stresses at the contact surface of the cement mantle. The results show that an additional layer of cobalt chrome produced the best performance.