Double-jointedness is a cool party trick that elicits many "oohs" and "aahs." Yes, anytime that a person can bend their fingers to touch the back of their hand, bend their knee joints backwards, or ...
When one or more joints bend further than average, it is known as hypermobility of the joints or being “double-jointed.” When hypermobility occurs in the elbows, a person may say they have a ...
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