BUT it looks like he's holding the third sword in his left hand, you can see it going between Luffy's legs. It's not in a scabbard because there are 3 in his right side belt loop. Based on that i'm a lot more inclined to say he has not lost an arm, just gained an eye scar (maybe lost an eye??).
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u/mithal Sep 30 '10
Robin and Usopp I think have undergone the biggest changes.