Carrie Underwood's X-Ray Appears She's Healed, But What Is In Her Arm??

"Last check up on the old wrist this morning!! Thanks, Dr. Wurth and my PT angel, Renee, a.k.a. “Bulldog” for fixing me up!!! 😉 I’m good to go!"

It appears she's all good to go...but what is that in her wrist? 

Must be what she says will set off airport metal detectors!