Joint hypermobility

The word "hypermobility" is most commonly used to describe excessive movement in the normal plane of movement, most frequently hyperextension. It is estimated that 10%-15% of normal children have hypermobile joints, but is also a feature of Marfan Syndrome, Ehlers-Danlos syndrome (hypermobile type) and Osteogenesis Imperfecta types I and IV. Benign Joint Hypermobility Syndrome (BJHS) describes the combination of joint hypermobility with associated symptoms such as chronic joint pain, back pain, joint subluxation and dislocations, soft tissue injuries, Marfan syndrome-like habitus and skin features.