updated 01/09/2012 AT 6:00 AM ET
•originally published 01/08/2012 AT 10:15 AM ET
What’s Brad Pitt’s newest accessory?
A cane – and it’s not just for show.
The actor, 48, walked the red carpet at the 23nd annual Palm Springs Film Festival awards gala with the cane on Saturday, and told reporters he has an injured ACL, a ligament in the knee that connects the femur with the tibia.
“I was carrying my daughter [Vivienne] down the hill and I slipped,” Pitt said. “It was either her or me.”