We had an early clue that it could of been Obito.

[Chachee]

http://www.narutobase.net/manga/Naruto/276/9
I think you're right

[Edge]

I don't think Kakashi sent his whole arm to the other dimension, just one part of it and it severed his arm off.

This.

[Tdogg]

Think about how Deidara got his arm back. We missed a big clue that could of helped us figure out who Tobi was. Tobi used his space/time jutsu to retrieve Deidara's arm. We could of been known that he shared the same dimension as Kakashi. That shit makes sense!!! I don't respect any Obito theories cause they didn't mention this or that his right side of the face was not wrinkles, but wounds from the boulder.

Very nice catch, a little late but hindsight always works that way lol *****
btw i fkn love your sig

[Gryphon]

Think about how Deidara got his arm back. We missed a big clue that could of helped us figure out who Tobi was. Tobi used his space/time jutsu to retrieve Deidara's arm. We could of been known that he shared the same dimension as Kakashi. That shit makes sense!!! I don't respect any Obito theories cause they didn't mention this or that his right side of the face was not wrinkles, but wounds from the boulder.

It was just his elbow which was cut off.

http://www.narutobase.net/manga/Naruto/280/17

[Super Saiyan 2 Teen Gohan]

Good find, never thought of that *****

[p0002q]

People still on this subject? and saying "good find" after it's been manga \ anime proven that only a portion of his upper arm was removed and the rest fell to the ground :P

[eXquisite]

A lot of you aren't too bright. He warped his upper arm away, causing his lower arm to fall off because it wasn't connected to anything.

[Floydical]

You really think that Kakuzu is gonna find another arm with a TONGUE on it? Cmon bro.

People are going both ways on this issue, but clearly Tobi did not retrieve Diedera's elbow from the other dimension.

Kakashi sent his elbow to the other dimension and his lower arm fell to the ground, which was later retrieved. Now while Kakuzu did sew his arm back together, it was not his original elbow that Kakuzu used, but it still allowed his arm to function.

Basically Diedara was a human ragdoll before all was said and done. having his left arm severed and re-attached, and later his right elbow was sent to another dimension and had to retrieve his severed forearm.... for shame young blast element user, for shame.

[Sn0rkack]

I always thought that was pretty obvious, to be honest, once we realized Kakashi could send stuff in there. Like, it just clicked. I remember wondering if Obito had a section of Kakashi's things in Kamui, like Sasuke's susanoo arrow and Pain's rocket.

[Remy03]

Unfortunately, Obito didn't find the arm in the other dimension. I'd like to believe that because I think it would have been cool forshadowing, but Kakashi only sent the elbow away. The picture that lilshell43 put up help illustrates it. In addition Deidara goes looking for his arm believing it was simply cut off and not lost.

[Gay]

/thread

[lilshell43]

/thread

I see. I apologize for the false theory than. Gotta give me credit for trying though :-)