Maksim Chmerkovskiy
The pro was sidelined during the second week of DWTS season 24 after suffering a calf injury. His partner, Heather Morris, ended up having to dance with a replacement.
Jana Kramer and Gleb Savchenko
Both dancers suffered injuries during season 23. The actress pulled a muscle in her rib cage before the show's opening night, and the pro was sidelined a month later after suffering a knee injury.
Sharna Burgess
During season 23, James Hinchcliffe's partner injured her knee during dress rehearsal. Jenna Johnson, who was originally partnered with Disney star Jake T. Austin for the season was eliminated first and was able to fill in for her.
Jodie Sweetin
The Fuller House star was taken to a hospital after injuring her ankle during season 22 rehearsals with pro partner Keo Motsepe.
Ginger Zee
The Today host suffered a pelvis injury right before the season finale of DWTS season 22 last year, but she was still able to perform partner Val Chmerkovskiy.
Amy Purdy
The Season 18 contestant was rushed to the hospital during a live show when she injured her shoulder during her rumba with partner Derek Hough. The snowboarder later updated her fans on Twitter, writing, "So, Looks like I have a rib out of place and my muscles are in spasm...I am being very proactive in healing up so I can continue this journey."
Mark Ballas
The pro injured his shoulder while partnered with Candace Cameron-Bure, right before the season 18 finale.
Dorothy Hamill
The figure skater was forced to leave during week two of season 16 due to a spine injury. "I have an injury that could be irreparable, and nerve damage, and it would be completely unfair for me to stay in this and have any of these people go home," Dorothy said at the time.
Derek Hough
Though he and partner Amber Riley eventually went on to win Season 17, the pro was forced to sit out one week after injuring his back. Fellow pro Mark Ballas stepped in to dance with the Glee star. Then, during season 20, Hough broke a toe and sprained his ankle while rehearsing for DWTS with partner Nastia Liukin.
Danica McKellar
The Wonder Years star broke a rib during a rehearsal session with Val Chmerkovskiy, posting on Twitter, "So...I broke a rib in yesterday's #DWTS rehearsal. Trying my best to pull thru and could use your prayers!! #wanttokeepdancing." McKellar was able to perform despite her injury, later telling us, "It's sore, but as long as nobody bumps into it, I'm OK! I just had to keep going. The show must go on!"
Billy Dee Williams
The Star Wars legend was forced to quit the competition due to chronic back pain in Season 18's third week of competition.
"It's chronic, it's arthritic. I made a tough choice, but it was a choice I think I needed to make.," Williams told us of his decision to leave the show.
Bill Nye
The beloved Science Guy was seriously injured during a performance on the ABC reality hit's 17th season, one which almost required surgery on his knee.
Karina Smirnoff
The pro hoofer injured her nack and jaw after falling during a rehearsal with partner Jacoby Jones.
Melissa Rycroft
The Bachelor star suffered an on set injury during camera blocking rehearsal for the tango and was immediately taken to the hospital and was diagnosed with a disc herniation at the C4-C5 level of her cervical spine.
Melissa Gilbert
The former Little House on the Prairie star hit her head on the ground during a paso doble and went to the hospital, but is doing just fine. "I'm alright. Mild concussion and whiplash," she tweeted.
Maria Menounos
Derek Hough's partner in crime this season, who claims to have a "high tolerance to pain," has kept pushing on despite two broken ribs and a stress fracture in her foot.
Ralph Macchio
During season 13, Macchio was the first to admit that he was injured; he was unable to practice for a week due to a ruptured cyst on the back of his knee.
Kym Johnson
Last season, the DWTS veteran took a tumble during rehearsals and was rushed to the hospital, where she was treated for a neck injury. It wasn't long before Johnson was back—neck brace and all.
Evan Lysacek
This Olympian broke two toes doing the jive in 2010 and soon after suffered a mild concussion while training, but it didn't stop him from dancing—as well as skating nightly in his concurrent Stars on Ice tour.
Jennifer Grey
The Dirty Dancing star ruptured a disc in her lower back the night before the season 12 finale but nevertheless came out a winner, later undergoing surgery to remove the fragment.
Ty Murray
The country hunk fell to the Dancing gods, but not in the way you'd think: Jewel's hubbie got a big shiner when he was knocked in this face with partner Chelsie Hightower's microphone pack.
Debi Mazar
The Entourage actress went to the hospital after making her debut in season 11 and was diagnosed with a "torn muscle in neck to chest," per her Twitter, for which she wore a neck brace.
Kathy Ireland
Before the season 11 premiere, Ireland took a quick dancing break to surf with her son; while in the ocean she bashed the board against the side of her leg, splitting it open, and had to get stitches.
Melissa Rycroft
The Bachelor babe went to the hospital in 2009 after being bothered all week by what turned out to be a hairline rib fracture.