From Clippers.com:

Under the supervision of team physician Dr. Tony Daly, Clippers guard Shaun Livingston underwent a Magnetic Resonance Imaging (MRI) exam on Tuesday morning at Centinela Freeman Regional Medical Center in Inglewood.

The MRI revealed that Livingston suffered tears to the anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL) and lateral meniscus. Livingston also suffered a patella dislocation, in addition to the previously diagnosed tibia/femoral dislocation.

Livingston suffered the injury at the 8:10 mark in the first quarter of the Clippers win over the Charlotte Bobcats on Monday, Feb. 26 at STAPLES Center.

Livingston was transported to Centinela Medical Center immediately following the injury, where he had an MRA (Magnetic resonance arteriogram) that showed no arterial bleeding.

The prognosis on Livingston's return to basketball activity is eight to twelve months.

Eight months would October 28.  Opening night this season was November 1.