Steven Tyler's health status unknown

(People.com) -- Nearly a week after Aerosmith's lead singer Steven Tyler fell off the stage at a South Dakota concert, mystery surrounds his current condition.

A concert spokesman said Tyler, 61, was airlifted to a local hospital after suffering minor head, neck and shoulder injuries, according to The Associated Press.

The band then postponed three concert dates in Canada and it's unclear when they will resume touring.

In radio interviews this week, lead guitarist Joe Perry said he hasn't spoken with Tyler since the fall, but told Chicago's 97.9 The Loop, "I've seen him fall off a stage more than once. ... I've fallen off. ... Stuff happens."

According to Perry, the frontman (who suffered a leg injury earlier this summer) broke his shoulder blade in two places.

"No concussion. Nothing internal," he told Detroit's WXRX 104.9 FM. "So it's like he [was] in a bad bar fight. [Like] somebody had a baseball bat."

As for Tyler's prognosis, Perry told Detroit's 101 WRIF, "They're still running tests. MRIs, everything, X-rays. I really don't know what's going on."

Perry, meanwhile, continues to rock. On Sunday, he helped Jane's Addiction close Lollapalooza in Chicago. As part of his introduction, lead singer Perry Farrell told the crowd, "Our prayers go out to Steven Tyler."

Though Perry told The Loop that Tyler is "gonna be sore for a while," he seems confident this is not the end for Aerosmith.

"Inevitably," he said in the interview with WXRX, "we always come back."

Meanwhile, Tyler's longtime friend and ex, Bebe Buell, invoked some Aerosmith lyrics when talking about the singer.

"I hope he's back in the saddle soon and walking your way," she told PEOPLE Wednesday. She added: "He's got nine lives!"

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