Aerosmith guitarist Brad Whitford fears time may be creeping up on the aging rockers - blaming old age for the foot injury which landed frontman Steven Tyler in rehab earlier this year.

Tyler checked into a facility in Pasadena, California in May, later revealing he was in rehab on doctor's orders because of a foot injury.

He has since confessed he was fighting a dependency on pain and sleep medication he needed to cope with pain of the injury.

The band has been hiatus in anticipation of Tyler's fully recovery so they can finish their next studio album.

But guitarist Whitford doesn't blame the injured star for holding back recording - insisting his plight has increased his own fears for the band's mortality.

He tells Billboard.com, "You have more than average concerns about it (injury), I guess, but you can't do anything about it.a Like a lot of other things in life, you don't get to call the shots on these things, do you? We're just ... getting older."

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(This news article provided by World Entertainment News Network)