Some comments were made after the 2009 tour of  Bruce Springsteen & The E Street Band about saxophonist Clarence Clemons health. He was often seen sitting down during shows and having a problem moving around of the stage. He explains all to Rolling Stone.

"That last tour was hell," Clemons tells Rolling Stone. "Pure hell." In the previous few years before the tour Clemons had his knees and hips replaced, but he was still in a lot of pain – and the constant travel didn't make it easier. "The tour was wonderful musically," he says. "But I knew when it was done that I had to have more surgery."

In the past year Clemons had both knees replaced (again) and spinal fusion surgery. "The timing was perfect because it didn't interfere with a lot of stuff that was going on in my life," he says. "It made me stronger, and for the past year I've been in physical therapy a few days a week working my ass off to get back in shape. I'm walking better now, though I still use a cane and crutches. But now I'm having hip problems again. I don't know why."

via Exclusive: Clarence Clemons Opens Up About Health Problems, Future of E Street Band | Rolling Stone Music.