Manila, Nov. 30 -- lect Joe Biden sprained his foot while playing with one of his dogs and will likely be in a walking boot "for several weeks," his doctor said Sunday.

Dr. Kevin O'Connor, director of executive medicine at GW Medical Faculty Associates, said in a statement that initial X-rays did not show any obvious fracture, but his clinical exam warranted more detailed imaging.

O'Connor said a computed tomography (CT) scan confirmed "hairline [small] fractures" of Biden's "lateral and intermediate cuneiform bones, which are in the mid-foot."

"It is anticipated that he will likely require a walking boot for several weeks," O'Connor added.

Biden slipped Saturday while playing with Major, one of his two dogs, and twisted his ankle, ABC ...