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    Kyphosis

    Scheuermann's disease; Roundback; Hunchback; Postural kyphosis

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

    Causes

    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 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 endocrine diseases
    • Connective tissue disorders
    • 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

    Exams 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)

    Treatment

    Treatment depends on the cause of the disorder:

    • Congenital kyphosis requires corrective surgery at an early age.
    • Scheuermann's disease is treated with a brace and physical therapy. Occasionally surgery is needed for large (greater than 60 degrees), painful curves.
    • Multiple compression fractures from osteoporosis can be left alone if there are no nervous system problems or pain. However, the osteoporosis needs to be treated to help prevent future fractures. For debilitating deformity or pain, surgery is an option.
    • Kyphosis caused by infection or tumor needs to be treated more aggressively, often with surgery and medications.

    Treatment for other types of kyphosis depends on the cause. Surgeryis neededif neurological symptoms or persistent pain develop.

    Outlook (Prognosis)

    Adolescents with Scheuermann's disease tend to do well even if they need surgery, and the disease stops once they stop growing. If the kyphosis is due to degenerative joint disease or multiple compression fractures, surgery is needed to correct the defect and improve pain.

    Possible Complications

    • Decreased lung capacity
    • Disabling back pain
    • Neurological symptoms including leg weakness or paralysis
    • Round back deformity

    Prevention

    Treating and preventing osteoporosis can prevent many cases of kyphosis in the elderly. Early diagnosis and bracing of Scheuermann's disease can reduce the need for surgery, but there is no way to prevent the disease.

    References

    Spiegel DA, Hosalkar HS, Dormans JP. The spine. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 678.

    Freeman BL III. Scoliosis and kyphosis. In: Canale ST, Beaty JH, eds. Campbell's Operative Orthopaedics. 11th ed. Philadelphia, Pa: Mosby Elsevier; 2007:chap 38.

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    • Skeletal spine

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    • Kyphosis

      illustration

      • Skeletal spine

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      • Kyphosis

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      A Closer Look

        Review Date: 9/4/2012

        Reviewed By: Thomas N. Joseph, MD, Private Practice specializing in Orthopaedics, subspecialty Foot and Ankle, Camden Bone & Joint, Camden, SC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Inc.

        The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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