You have 20 muscles in your forearm, the part of your arm between your elbow and your hand. They help you move your arms, hands, and fingers and perform many of the tasks of daily life. You can strain ...

Thumb hypermobility is when a person’s thumb joint has an unusually large range of movement. Some people may experience mild to severe joint pain and require treatment. Share on Pinterest Ivan ...

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 ...

In this video, magician Ash Marlow explains the technique behind the “Muscle Pass,” a coin trick where a coin appears to jump ...

Split hand syndrome is a potential sign of amyotrophic lateral sclerosis (ALS). This means that some of the muscles in the hand are weak and thin (atrophied), while others are less affected.