In contrast, Naruto's arm was recreated using Hashirama's cells, but bandaged to avoid looking like the evil White Zetsu. ... He considers it his greatest invention, because it's attuned to Naruto's chakra, not an easy feat considering Naruto has Kurama, the Nine-Tails Fox, inside him.

What happened to Naruto hand?

When Sasuke and Naruto Fought Together the Final Battle, They lost one of their arms. This was because of the Jutsus utilized by them. Naruto utilized Rasengan which was Taught to him by Jiraya, one of the 3 sanins.

How did Naruto lose his arm?

How Did Naruto Lose His Arm? Naruto lost his arm during the final battle between him and Sasuke. Being right handed, Naruto used his Rasengan in direct contact with Sasuke's left handed Chidori. The pair both lost a limb, as their strength was equal.