We recognize that "BlackBerry Thumb" can be an all-too-real affliction but, seriously, if you need something like this therapeutic contraption you've really got to let it go. Literally.
The "Xtensor" claims to be "the first product on the market to perform with true bio-mechanically correctness and treats the direct cause of this pain." That may be so, but to us it looks like a bowling glove combined with those elastic bands that pitchers use for to exercise their rotator cuffs.
In any case, the makers of the Xtensor say it can help rehabilitate habitual gamers as well as CrackBerry addicts. As for us, we'd rather be at the spa.