Surface cross-linked UHMWPE using peroxides

Oxidation resistant peroxide cross-linked UHMWPE produced by blending and surface diffusion

Ultra-high molecular weight polyethylene (UHMWPE) has been widely used as acetabular cup in total hip replacement (THR) and tibial component in total knee replacement (TKR). Crosslinking of UHMWPE has been successful used to improve its wear performance leading to longer life of orthopedic implants. Crosslinking can be performed by radiation or organic peroxides. Peroxide crosslinking is a conv...

Comparison Of Long-term Conventional Uhmwpe Retrievals With Mid-term Moderately Cross-linked Uhmwpe Retrievals

Introduction: Ultra-high molecular weight polyethylene (UHMWPE) is the most widely used bearing surface option in total hip arthroplasty. Radiation cross-linking has improved the wear resistance of conventional UHMWPE. Radiation cross-linking also generates residual free radicals, adversely affecting long-term oxidative stability. Post irradiation melting is effectively used to eliminate residu...

Investigation on Conventional and Cross-linked UHMWPE Artificial Joint Biomaterials Using a BiotriboPOD Method

Investigation on Conventional and Cross-linked UHMWPE Artificial Joint Biomaterials Using a BiotriboPOD Method Jiajia Chen1, Fei Tang1, Zikai Hua1 1School of Mechatronics Engineering and Automation, Shanghai University, China. Corresponding Author: Zikai Hua, School of Mechatronics Engineering and Automation, Shanghai University, No. 149, Yanchang Rd, 200072Shanghai, PRChina. Tel: +86 5633 1517...

Tibial Insert Retrievals Allow Comparison of Wear and Oxidation in Conventional and Highly Cross-linked UHMWPE

Knee Simulator Wear of Cross-linked Uhmwpe with Normal and Mal-rotation Kinematics

Introduction: Wear of ultra-high molecular weight polyethylene (UHMWPE) is a major factor that affects longevity of the total joint replacement. In total hips (THR), cross-linking of polyethylene has been shown to be highly effective in reducing wear both clinically and experimentally [1-3]. Also, in TKR, Schmidig et al. [4] showed a 90% reduction of wear rate in 10 Mrad compared to 3 Mrad tibi...