By John Powell – GlobalTV

A personal injury in the Big Brother house could potentially sideline one of the Houseguests.

After this morning’s wake-up call on the live feeds, Christmas Abbott, the 33-year-old fitness personality from North Carolina, was piggy-back riding Jason, the 37-year-old rodeo clown from Iowa, when he slipped on the grass in the backyard and fell. Christmas also tumbled, landing on her ankle. Lying on the lawn, she called out to Big Brother for assistance.

Unable to stand or walk on her own, Christmas has to be carried to the Diary Room by her fellow Houseguests to be assessed by Big Brother’s on-site medical staff before being taken to hospital.

It is unknown at this time the extent of Christmas’ injury.

After Christmas left the house to receive medical attention, the Houseguests discussed what happened.

“She was laying there with two nurses,” said Matthew describing what he saw to Raven. “It didn’t look good. They took her to urgent care.”

“Was her ankle messed up in a weird way?” asked Raven.

“It was really bruised and her foot almost didn’t have an arch. So, it was completely swollen,” said Matthew.

In the storage room, Cody confirmed to Jason that he and Matthew carried Christmas to the Diary Room. Jason expressed regret about the accident and his part in it.

Since Christmas was nominated by Head of Household Cody this week and is on the block with Jillian as the final nominations, it is also unknown how the injury could affect the rest of the week.

Yesterday, Christmas raged after being nominated by Cody claiming he had betrayed her.

Season 19 of Big Brother USA airs on Global every Wednesday, Thursday and Sunday.