Their bones are also affected, and they usually develop joint contractures (stiff joints), kyphosis (a specific type of curve to the spine), and broad hands with short fingers.
Other spine abnormalities such as congenital scoliosis and kyphosis, or soft tissue tumors overlying the spine, are not likely to have these accompanying findings.
Most males with Hunter syndrome develop joint stiffness, chronic diarrhea, enlarged liver and spleen, heart valve problems, hearing loss, and kyphosis.
Weakening of the trunk muscles around this age often leads to scoliosis (a side-to-side spine curvature) and kyphosis (a front-to-back curvature).
Kyphosis. Kyphosis is an abnormal outward curvature of the spine at the back, sometimes called hunchback when it occurs in the upper back.
Scheuermann disease can (rarely) lead to serious kyphosis (hunchback condition) due to erosion of the vertebral bodies.
Children with Marfan may develop kyphosis either in the upper (thoracic) spine or the lower (lumbar) spine.
In addition, the child's spine should be x rayed in order to measure the extent of scoliosis or kyphosis.
Usually, however, the kyphosis is mild, causing no further symptoms and requiring no special treatment.
Physeal osteochondrosis is known as Scheuermann disease or juvenile kyphosis.