Fig. 4From: Halo and spillover effect illustrations for selected beneficial medical devices and drugsThree-year revision rates over time. The average 3-year revision rate for metal-on-metal total hip replacements (THR) and for hip resurfacing over the time periods April 2003 through September 2007 and from April 2003 through December 2010; based on results reported in the 2008 and 2011 Annual Reports of the England and Wales National Joint RegistryBack to article page