US President-elect Joe Biden suffered "hairline fractures" on his foot while playing with one of his dogs on Saturday and may need a "walking boot for several weeks", a CT scan report has confirmed late Sunday evening.

Biden, 78, spent most of Sunday in doctor offices - first at Delaware Orthopaedic Specialists in Newark, Delaware and subsequently at another location for a CT scan.

Biden's "initial x-rays did not show any obvious fracture, but his clinical exam warranted more detailed imaging," according to Dr Kevin O'Connor, Director, Executive Medicine, GW Medical Faculty Associates. O'Connor has been Biden's primary care physician since 2009.

"Follow-up CT scan confirmed hairline (small) fractures of President-elect 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," the doctor said.

White House pool reporters in Wilmington, Delaware, said they noticed Biden was visibly limping as he waved to reporters and bystanders.

Biden was injured Saturday while playing with Major, one of his two dogs. Major joined the Biden family in 2018, the other dog Champ is 2008 vintage. As soon as the news made rounds, Twitter was busy with some hilarious jokes and memes. Check some of them below: