Third Body Wear of UHMWPE-on-PEEK-OPTIMA™
Open Access
- 11 March 2020
- Vol. 13 (6), 1264
- https://doi.org/10.3390/ma13061264
Abstract
PEEK-OPTIMA™ is being considered as an alternative to cobalt chrome (CoCr) in the femoral component of total knee replacements. To date, investigations of ultra-high molecular weight polyethylene (UHMWPE)-on-PEEK have shown an equivalent wear rate to conventional implant materials under standard conditions. In this study, the third body wear performance of UHMWPE-on-PEEK was directly compared to UHMWPE-on-CoCr in a series of pin-on-plate studies using two approaches for third body damage. Damage simulation with particles of bone cement showed a significant (p < 0.001), four-fold increase in the mean surface roughness of PEEK plates compared to CoCr. However, wear simulation against the damaged plates showed no significant difference in the wear of UHMWPE pins against the different materials (p = 0.59), and a polishing effect by the pin against the PEEK plates was observed. Scratching PEEK and CoCr counterfaces with a diamond stylus to create scratches representative of severe third body damage (4 µm lip height) resulted in a significantly higher (p = 0.01) wear of UHMWPE against CoCr compared to PEEK and again, against PEEK plates, polishing by the UHMWPE pin led to a reduction in scratch lip height. This study shows that in terms of its wear performance under third body wear/damage conditions, UHMWPE-on-PEEK differs from conventional knee replacement materials.Funding Information
- Wellcome Trust (WT 088908/Z/09/Z)
- Engineering and Physical Sciences Research Council (EP/J017620/1)
This publication has 28 references indexed in Scilit:
- (iv) Enhancing the safety and reliability of joint replacement implantsOrthopaedics and Trauma, 2012
- Wear of ceramic‐on‐carbon fiber‐reinforced poly‐ether ether ketone hip replacementsJournal of Biomedical Materials Research Part B: Applied Biomaterials, 2012
- Alternative bearing materials for intervertebral disc arthroplastyBiomaterials, 2010
- Patient Satisfaction after Total Knee Arthroplasty: Who is Satisfied and Who is Not?Clinical Orthopaedics and Related Research, 2010
- How Much Sterile Saline Should be Used for Efficient Lavage During Total Knee Arthroplasty? Effects of Pulse Lavage Irrigation on Removal of Bone and Cement DebrisThe Journal of Arthroplasty, 2007
- Wear of crosslinked polyethylene under different tribological conditionsJournal of Materials Science: Materials in Medicine, 2006
- Wear, Debris, and Biologic Activity of Cross-linked Polyethylene in the KneeClinical Orthopaedics and Related Research, 2004
- Three-body wear of UHMWPE acetabular cups by PMMA particles against CoCr, alumina and zirconia heads in a hip joint simulatorWear, 2001
- A hip simulator study of the influence of patient activity level on the wear of crosslinked polyethylene under smooth and roughened femoral conditionsWear, 2001