Mariska Hargitay

Law & Order: SVU star Mariska Hargitay says she suffered the partially collapsed lung that sidelined her from the show by taking a fall during filming.

"I've been doing my own stunts on the show for 10 years," Hargitay told People. "I fell wrong, basically. I collapsed my lung doing a stunt."

Hargitay, 45, underwent surgery in January and returned to work on SVU shortly thereafter. She then checked back into the hospital on March 3 for discomfort related to the injury. Hargitay's rep said she underwent "routine tests," and the star reported back to the set on March 23.

Despite the scary couple of months, Hargitay said she's completely healthy now. "I'm 100 percent," she said. "I'm back to my old self."