Smith+Nephew announces it will showcase meaningful new material evidence for its OR3O Dual Mobility Hip System and OXINIUM DH Technology at the American Academy of Orthopedic Surgeons (AAOS) 2021 Annual Meeting in San Diego, CA. New data confirms a reduction in material loss and corrosion for OXINIUM DH (Diffusion Hardened) liners used with the OR3O System – an improvement on equivalent CoCr dual mobility liners within the test. In-vitro testing showed a substantial (p <0.05) difference in total volume metal ion elution between Cobalt Chromium Molybdenum (CoCrMo) modular acetabular liners and the OXINIUM DH liner used in the OR3O System.1 This is the first device-level testing comparing the performance of the OR3O Dual Mobility Liners against CoCrMo Liners- the only other material option available in the US market today. In recent literature, these CoCrMo implants have exhibited the potential limitations of metal ion elution,2,3,4 corrosion potential5 and mal-seating of implants The OR3O Dual Mobility System was launched in 2019 and has quickly transformed the modular dual mobility market segment due to its use of OXINIUM DH in lieu of traditional CoCrMo liner options. It is the only fully advanced bearing modular dual mobility option available in a segment that has grown to encompass 12% of primary hip replacements and 30% of hip revisions in the US.