Wear of CoCrMo alloys used in metal-on-metal hip joints: A tribocorrosion appraisal

► The electrode potential is a key factor determining wear of CoCrMo alloys. ► Wear accelerates corrosion of CoCrMo alloys in and outside the contact zone. ► Tribocorrosion models were compared to simulator data published on CoCrMo degradation. ► Wear accelerated corrosion accounts for a large fraction of overall wear.