Board Thread:Theories and Speculation/@comment-43776375-20190921063938/@comment-43403813-20191017004629

I only quoted Kabuto saying that he was immobile, not that he wasn't healed completely. But it is evident that Nagato was not completely healed by him absorbing Bee's chakra. The chakra only nourished him, making him look more healthy, but it did not reverse the physical damage done to his skeletal structure from the Gedo Mazo and Hanzo's explosive tags on his legs.

Yes Nagato moved better than he did before, but it could have been much better.