Kyphosis Health Article

Definition

Kyphosis is a curving of the spine that causes a bowing of the back, which leads to a hunchback or slouching posture.

Alternative Names

Scheuermann's disease; Roundback; Hunchback; Postural kyphosis

Causes, incidence, and risk factors

Kyphosis is a spinal deformity. It can be caused by:

• Degenerative disease (such as arthritis)
• Developmental problems
• Trauma

Kyphosis can occur at any age, although it is rare at birth.

Adolescent kyphosis, also known as Scheuermann's disease, is caused by the wedging together of several bones of the spine (vertebrae) in a row. The cause of Scheuermann's disease is unknown.

In adults, kyphosis can be a result of:

• Fractures caused by osteoporosis (osteoporotic compression fractures)
• Slipping of one vertebra forward on another (spondylolisthesis)

Other causes of kyphosis include:

• Certain endocrine diseases
• Connective tissue disorders
• Disk degeneration
• Infection (such as tuberculosis)
• Muscular dystrophy
• Neurofibromatosis
• Paget's disease
• Polio
• Spina bifida
• Tumors

Kyphosis can also be seen with scoliosis. Each cause has its own risk factors.

Symptoms

• Difficulty breathing (in severe cases)
• Fatigue
• Mild back pain
• Round back appearance
• Tenderness and stiffness in the spine

Signs and tests

Physical examination by a health care provider confirms the abnormal curve of the spine. The doctor will also look for any nervous system (neurological) changes (weakness, paralysis, or changes in sensation) below the curve.

Other tests may include:

• Spine x-ray
• Pulmonary function tests (if kyphosis affects breathing)
• MRI (if there may be a tumor, infection, or neurological symptoms)