It can´t be argued that the theoretical premises of hip resurfacing arthroplasty would not have been truly great. What could sound any better than “restoring native anatomy and hip biomechanics”? As we know, everything went a different road. Clough & Clough outlined quite accurate statement about hip resurfacings:
Whilst MoM HRA can, in very limited circumstances, with certain implant designs, provide a long-lasting, functionally improved hip that facilitates a return back to sporting activity (young adult male, suffering from osteoarthritis, who has appropriate anatomy with femoral head sizes of 50 mm or above), it has not been the surgical panacea that it was originally hoped or designed to be.
I think that is about right.