Hypermobility syndrome is too much movement at a joint. It is sometimes referred to as being “double jointed” or “loose jointed.”
It is most common in young children who are more flexible than older children and teenagers. It usually affects movements in the shoulders, elbows, wrists, fingers and knees, but can be seen in all joints. The most common form, benign hypermobility of childhood, is due to age and genetics.