The American Idol host underwent a "procedure" after filming the show on Wednesday as he needed treatment to remove scar tissue from an old tendon injury.
He revealed on Twitter: "I have a tiny tear in my elbow...pausing life for procedure."
He later explained during his KIIS-FM show: "I had a probe stuck into my right elbow. I'm not a robot [but] they went in with a tiny little probe and they scraped some scar tissue from the tendon, cause I tore the tendon from working out."
Ryan - who admits he is "not a great patient" - was wide awake during the surgery but admits he couldn't bear to watch what the doctor was doing.
He said: "I couldn't look. But I could feel the pressure.
"It was very easy and practically noninvasive."
While the procedure went well, Ryan hadn't expected it to take so long and ended up with a schedule clash.
He said: "I didn't calculate suturing into my schedule. I thought it was an in-and-out, 12-minute procedure."
The 37-year-old star later tweeted a picture of his arm showing where he had been treated.
Alongside the image, he wrote: "Will this be noticeable in my mesh falcons jersey? funny bone not so funny today.(sic)"
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
Shakira used her star power to share the burden and prioritize the protection of refugees. Read More »
The Hollywood Wives novelist and actress Jackie Collins has died of breast cancer at age 77. Read More »
Your Spring guide.
NelspruitDante Personnel RecruitmentR4 500 - R6 500 Per Month
HatfieldDante Personnel RecruitmentR5 000 - R6 500 Per Month
PolokwaneDante Personnel RecruitmentR12 000 - R15 000 Per Month
HousesR 3 995 000
HousesR 3 499 000
HousesR 5 200 000