Does anyone recognise this figuarts(maybe) piece?
 

I just found this on my floor, and it looks like it's from a Figuart, but I can't seem to see which one of my collection it is, it appears to be a right kneecap or elbow, but I've checked and no one seems to be missing anything;

http://i.imgur.com/qb25Uji.jpg

Edit; Never mind, it was Gridon's elbow, oops.