If I’m resting somewhere and my hand is laying on its back the hands automatically form a claw if not manually corrected to lying flat. Why is this? Why isn’t it automatically flat?
In: 10
Your muscles are not just like cables. They are more like rubber bands! They are in constant tension and then cause you to move when they contract. Do this little experiment on yourself:
Put your elbow on a table with your arm in the air. Allow your hand to relax, let your hand fall down, palm toward your forearm. Now, let it fall the other way, back of your hand towards your forearm. Did your fingers naturally contract a little when you did this? Did the “claw” get tighter? You’re changing the length of the muscles in resting tension!
You can use this test to determine if someone has a tendon injury, like from a puncture in their palm. If the finger doesn’t contract when brought from palm down to palm up like the rest of them, the tendon is probably severed!
Source: am orthopaedic surgeon.
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