Brad Pitt Walks With A Cane

Brad Pitt has been spotted walking around with a cane on private property on Thursday (January 5) in Beverly Hills, Calif.

“He tore his MCL,” a source exclusively tells JustJared.com. The MCL is short for medial collateral ligament, one of four ligaments that stabilizes the knee joint.

Over the weekend, the 48-year-old actor picked up some groceries with son Pax in his new sidecar motorcycle.

PHOTOS: Check out the latest pics of Brad Pitt

The L.A. Times reports that Brad‘s upcoming film, World War Z, may become a franchise.

Paramount sees the zombie thriller “as a trilogy that would have the grounded, gun-metal realism of, say, [Matt] Damon‘s Jason Bourne series tethered to the unsettling end-times vibe of AMC’s The Walking Dead.”