On Aug. 29, Suri Cruise was spotted with a cast for a broken arm — and now Life & Style has learned what caused the injury to Katie Holmes' 7-year-old daughter.
 
While visiting relatives in Toledo, Ohio, “Katie and Suri were at a park when [she] did a cartwheel down a hill,” an eyewitness tells the new issue of Life & Style, on stands now. “The momentum twisted her arm as she fell, and she started screaming.”

Suri Cruise Has Broken Her Arm
 
Mom came right to the rescue and rushed Suri to the hospital. “When Katie picked her up, Suri’s arm was hanging limply, getting purple and twisted into a ‘U’ shape,” the eyewitness explains. “Suri was very brave.”
 
For more, pick up this week’s issue of Life & Style, on newsstands now.