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The article suggest that there were 2 different versions of the ASR Cup.  Is this actually true or is the author just confused about the use (and approval process) for the ASR cup with XL head in THA and the ASR cup with resurfacing head in hip resurfacing?  I always thought it was the same cup, but the way that article reads the author thinks there were two different ASR cups.  He is wrong, right?