FAYETTEVILLE, Ark. - Arkansas tailback Darren McFadden has undergone surgery on a joint in his left toe and will be sidelined for several weeks it was announced by UA head coach Houston Nutt on Saturday. "We are all disappointed that Darren wont be able to join us for the start of fall camp," Nutt said. "I know that no one is more disappointed with what has happened than Darren. While we are still gathering details about how the injury came about, our first priority is to help him with his recovery. He underwent surgery this morning and will begin the rehabilitation process soon. We are all hoping for a speedy recovery and look forward to his return to the Razorback family." McFadden suffered an open dislocation of the distal IP joint of his big left toe. The sophomore underwent surgery early Saturday morning in Little Rock to repair the capsule surrounding the joint. A small pin was also inserted in the joint to stabilize it. Arkansas head trainer Dean Weber says McFadden will not practice for several weeks and is doubtful for Arkansas season opener against Southern California on Sept. 2.