13 year old Bailey Baker was complaining about pain in her back and neck, to go along with numbness in her thumb. Dr. Jane Sadler at Baylor Medical Center in Garland Texas had the diagnosis-Texting teen tendonitis, or TTT for short. Apparently, Ms. Baker had sent out 8,000 text messages in June, much more than the 25 per day her mother thought she was doing. The constant thumb movement on her Samsung device led to Bailey's numb thumb, and her posture while texting led to the neck and back pains. The Doctor ordered the teenager to strengthen her thumbs by exercising them and says she expects a surge in thumb joint replacement over the next several decades.