Danica McKellar broke a rib Thursday, April 24, while rehearsing for "Dancing with the Stars." The former "Wonder Years" actress tweeted to her over 90,000 Twitter followers:

Hopefully, she and dance partner Val Chmerkovskiy can come up with a way to pull through together before Monday night's episode.

McKellar is hardly the first "DWTS" contestant to get injured in a dancing-related accident. Last year, Bill Nye, The Science Guy, hurt his knee on the show. He uploaded a picture to Instagram at the time. Nye wrote, "Here is the scoop: partially torn ligament. Awaiting the doc's orders with Tyne. We plan to dance! Stand by..."

The year before, 2012, opera singer Katherine Jenkins hurt her back dancing. "Thank you for all your concerned tweets... I'm with the Doctor, he says it was a reflectorical spasm in my lower back," she tweeted after the show. She later went on to become runner-up in the season finale.

In 2011, "DWTS" pro Kym Johnson injured her neck while practicing with dance partner Hines Ward. Despite the scary looking injury, the show released a statement saying that after several tests, Kym was cleared by the medical staff, though "bruised, sore" and "wearing a neck brace." She went on to win that year's competition.