Hitchhiker’s thumb can be present in people with diastrophic dysplasia, a condition that affects cartilage and bone ...

That unusual bend in your thumb isn't a cool party trick. Discover what hitchhiker's thumb might reveal about your health and ...

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 ...