What does it mean to be double jointed?
People who are double-jointed do not have extra joints in their bodies. They have the inherited condition hypermobility or hyperlaxity. Hypermobility is when a joint has a wider range of motion than usual. Hyperlaxity means that the ligaments that support your joints have more stretchiness.
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE