Kyphosis is a curving of the spine that causes a bowing or rounding of the back.
This leads to a hunchback or slouching posture.
Kyphosis can occur at any age, although it is rare at birth.
A type of kyphosis that occurs in young teens is known as
Scheuermann disease. It is caused by the wedging together of several bones of the spine (vertebrae) in a row. The cause of this condition is unknown. Kyphosis can also occur in young teens who have cerebral palsy.
In adults, kyphosis can be caused by:
• Degenerative diseases of the spine (such as arthritis or disk degeneration)
• Fractures caused by osteoporosis (osteoporotic compression fractures)
• Injury (trauma)
• Slipping of one vertebra forward on another (spondylolisthesis)
Other causes of kyphosis include:
• Certain hormone (endocrine) diseases
• Connective tissue disorders
• Infection (such as tuberculosis)
• Muscular dystrophy (group of inherited disorders that cause muscle weakness and loss of muscle tissue)
• Neurofibromatosis (disorder in which nerve tissue tumors form)
• Paget disease (disorder that involves abnormal bone destruction and regrowth)
• Scoliosis (curving of the spine often looks like a C or S)
• Spina bifida (birth defect in which the backbone and spinal canal don’t close before birth)