Do You Have This Extra Tendon in Your Wrist? Here’s What It Means | April 17, 2025
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Do You Have This Extra Tendon in Your Wrist? Here’s What It Means
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Have you ever tried touching your pinky finger to your thumb and noticed a prominent tendon popping up on your wrist? Or maybe you tried and saw nothing at all. This small test can actually reveal an interesting fact about human evolution and your own unique anatomy!
The Mystery of the Palmaris Longus Tendon
The tendon that may or may not appear when you perform this movement is called the palmaris longus tendon. It is connected to the palmaris longus muscle, a vestigial structure that was once essential for climbing and gripping in our primate ancestors. However, through evolution and changes in human needs, this muscle has become unnecessary for most modern functions.
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