title: The lubrication performance of the ceramic-on-ceramic hip implant under starved conditions.
abstract: Lubrication plays an important role in the clinical performance of the ceramic-on-ceramic (CoC) hip implant in terms of reducing wear and avoiding squeaking. All the previous lubrication analyses of CoC hip implants assumed that synovial fluid was sufficiently supplied to the contact area. The aim of this study was to investigate the lubrication performance of the CoC hip implant under starved conditions. A starved lubrication model was presented for the CoC hip implant. The model was solved using multi-grid techniques. Results showed that the fluid film thickness of the CoC hip implant was affected by fluid supply conditions: with the increase in the supplied fluid layer, the lubrication film thickness approached to that of the fully blooded solution; when the available fluid layer reduced to some level, the fluid film thickness considerably decreased with the supplying condition. The above finding provides new insights into the lubrication performance of hip implants.
authors.affiliation: Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, UK. Electronic address: Q.Meng@leeds.ac.uk.
authors.forename: Qingen
authors.initials: Q
authors.lastname: Meng
authors.affiliation: School of Mechanical Engineering, Qingdao Technological University, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Mechanical Engineering, Qingdao Technological University, China.
authors.forename: Peiran
authors.initials: P
authors.lastname: Yang
authors.affiliation: Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, UK; School of Mechanical Engineering, Xi׳an Jiaotong University, China.
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Jin
authors.affiliation: Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, UK.
authors.forename: John
authors.initials: J
authors.lastname: Fisher
mesh_terms: D002516:Ceramics; D006621:Hip Joint; D006622:Hip Prosthesis; D008153:Lubrication; D011312:Pressure
keywords: Ceramic-on-ceramic; Hip implant; Lubrication; Starvation; Tribology