Carson Palmer’s knee injury was “devastating and potentially career-ending,” involving numerous ligament tears, a shredded ligament, damaged cartilage and a dislocated kneecap, his surgeon said Thursday. The Cincinnati Bengals quarterback tore ligaments in his left knee when he was hit by Pittsburgh’s Kimo von Oelhoffen on his first pass during the Steelers’ 31-17 playoff victory Sunday. The team announced that he had torn the anterior cruciate and medial collateral ligaments. The damage was much more extensive and severe, but Dr. Lonnie Paulos said surgery went well and Palmer could be back for the start of the season. Palmer had surgery Tuesday in Houston. Doctors used grafts from other parts of his body and donated tissue to fix the damage during an operation that lasted more than two hours. Palmer headed back to California on Thursday to do his rehabilitation. “It’s not just like it was a torn ACL,” Paulos said Thursday, in a phone interview from Houston. “It’s a magnitude more difficult to recover from and repair. It can and has ended careers, without a doubt. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREGift Box shows no rust in San Antonio Stakes win at Santa Anita “However, I feel very comfortable with Carson as an athlete and the heart that he’s got. In the end, that’s the bottom line. I can see the look in his eye already. He’s ready to get going.” Coaching carousel Mike McCarthy was hired as coach of the Green Bay Packers, who hope the San Francisco 49ers’ offensive coordinator can revive a team coming off its worst season in 15 years. McCarthy, a former Packers assistant, received a three-year deal. He replaces Mike Sherman, who was fired Jan. 2 after a 4-12 season. Mike Mularkey submitted his resignation to the Buffalo Bills, a person familiar with discussions between the coach and the team told The Associated Press. Mularkey’s departure is a major surprise after team owner Ralph Wilson announced last week that Mularkey would stay on as coach. Wilson went out of his way to back Mularkey, holding a second press conference on Jan. 4, hours after he announced the firing of team president and general manager Tom Donahoe. A day later, Wilson replaced Donahoe by luring Hall of Fame coach Marv Levy out of retirement to take over as GM. Thursday was Levy’s first full day on the job. Hall of Fame receiver James Lofton interviewed with the Oakland Raiders, the second person in as many days brought in to discuss the team’s head coaching vacancy. Fourth-and-goal Carolina leading tackler Will Witherspoon said he isn’t discouraged he hasn’t yet signed a long-term contract extension and still hopes to play for the Panthers next season. Witherspoon, who led the team with 109 tackles, becomes an unrestricted free agent at the end of the season. Talks on a new deal have been slow, while best friend and fellow linebacker Dan Morgan signed a five-year, $28 million extension during training camp. A Phoenix man was arrested after allegedly using a credit card account belonging to Green Bay Packers quarterback Brett Favre more than 40 times, authorities said. The Arizona Attorney General’s Office said William J. Joachim, 35, was arrested on four felony charges of theft, fraud schemes, aggravated taking the identity of another and misconduct involving weapons. The Baltimore Ravens hired former Pro Bowl defensive back Mark Carrier as their secondary coach. The Minnesota Vikings hired Green Bay quarterbacks coach Darrell Bevell as their offensive coordinator. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!