A professional massage therapist is warning that it’s not just the big muscles than can put a crimp in your style.

As WBBM Newsradio’s John Cody reports, Courtney Lewis, founder of The Rub Chicago at 948 W. Huron St., calls the new malady “helicopter thumb,” for the high-speed rotating motion of the dedicated smart phone browser.

“Absolutely—I mean, you see it a lot with iPhones, and H2C phones, and anything that doesn’t actually have a keypad, where you’re using your thumb to scroll through pages and to advance pages—overusing; overextending your thumb joint,” Lewis said.

CBS Chicago, Chicago, Illinois, March 5, 2012