A type of joint in anatomy where bones connect in a way that allows movement in multiple directions; a ball-and-socket joint.
From Greek 'en-' (in) + 'arthron' (joint) + '-ia' (condition, state). Medical/anatomical term from Classical Greek describing the structure of freely movable joints in the skeleton.
Your shoulder and hip are enarthrodia joints—they're like nature's ball-and-socket toys, letting your limbs spin in circles. This is why you can do windmills with your arms but not your elbows!
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