A member asked:

I'm wondering why are people born double jointed?

A doctor has provided 1 answer
Dr. Laurence Badgley answered

Specializes in General Practice

Medical name is joint hypermobility syndrome. This is mostly inherited in female line & women can lock knees & touch palms to floor, oppose thumb to forearm, & put feet behind neck as children. Imo is conserved trait to impart ease of childbirth & by 4th childbirth often takes minutes not hours & more infants born healthier. Condition also highly associated with development of fibromyalgia.

Answered Jul 25, 2013

5.1k views

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