Double-jointed? It’s not just a fun party trick. Uber-flexible joints could be a sign of a rare genetic condition that makes you more susceptible to respiratory illnesses and also complicates recovery ...
When you give a thumbs-up and notice your digit bends backward at an unusually dramatic angle, you’re witnessing what medical professionals call “distal hyperextensibility” — though most people know ...
Give yourself a thumbs-up, then take a closer look. If your thumb’s tip extends back toward your knuckle more than 50 degrees, you may have hitchhiker’s thumb. The nickname replaces its more technical ...