After a laundry list of injuries plagued Aerosmith's summer tour with ZZ Top, the band has finally been forced to cancel the remainder of the trek. Earlier in the summer, bassist Tom Hamilton missed a few shows due to some unspecified "noninvasive surgery," and guitarist Brad Whitford sat out a number of gigs after suffering a head injury. The band had to postpone a few shows last month when Steven Tyler tore a leg muscle, but this time his injuries are too much to overcome. Tyler fell from the stage during the August 5 show at the annual Sturgis Motorcycle Rally in South Dakota, and doctors have advised him to take the time to properly recuperate from the accident that resulted in a broken shoulder and stitches to the head. In his current condition, Tyler is unable to tour and the band wants to give him time to get healthy, Aerosmith said in a statement.

"Words can't express the sadness I feel for having to cancel this tour," said Joe Perry. "I would like to thank our loyal fans for sticking by us through thick and thin and all the good energy they are sending our way. We hope we can get the Aerosmith machine up and running again as soon as possible. I sure am going to miss playing with ZZ Top just as I'm sure the fans are going to miss seeing them playing with us as well. My hat's off to our crew for putting up with this crazy stop and start tour. In my estimation, it was one of the best looking and best run tours we've ever had."

Whitford added, "All of us here in the Aerosmith organization and all of the people who contribute to making our shows possible are in a state of shock. We never anticipated this tour coming to such a swift and unfortunate ending. Our thoughts and prayers go out to Steven for a speedy recovery and return to good health."

In a message released to fans, Tyler described exactly what happened at the Sturgis show. "A major thunderstorm had delayed the show for an hour, but after it passed through, the full moon and tens of thousands of my biker buddies were ready to rock! It was one of the best shows we've played in a long time," Tyler said, according to E! Online "And just as I'm thinking, 'It doesn't get any better than this'... FUSES BLOW! We have a complete audio sound system failure! We were in the middle of 'Love in an Elevator,' and the band slowly realized something was up. Well, I wasn't gonna go hide under the big top and play ROCK STAR and wait for everything to be fixed. I wanted to go out to the crowd to continue the show... so, the Train Kept A- Rollin' and I ran out on the cat walk and grabbed my mic to finish the song. I was doing the Tyler shuffle and then I zigged when I should have zagged... and I slipped, and as I live on the edge... I fell off the edge! I landed upside down, and after 20 stitches on the back of my head, and a broken left shoulder, I just want to say that I'm plain grateful that I didn't break my neck!"