Font Size
A
A
A
1
...

Ankylosing Spondylitis, Radiologic Perspective

Ankylosing Spondylitis Overview

Ankylosing spondylitis is a type of arthritis that is due to inflammation of multiple joints, characteristically the spinal facet joints and the sacroiliac joints at the base of the spine. While it tends to affect these joints and the soft tissues around the spine, other joints may also be affected as well as tissues around the joints (entheses, where tendons and ligaments attach to bone). This disorder frequently results in bony ankylosis (or fusion). The term ankylosing is derived from the Greek word ankylos, which means stiffening of a joint. Spondylos means vertebra (or spine). Spondylitis refers to inflammation of one or more vertebrae. Ankylosing spondylitis is usually a chronic and progressive form of arthritis. Ankylosing spondylitis may also involve areas of the body other than the joints, such the eyes, heart, and lungs.

Ankylosing spondylitis is estimated to affect approximately 0.1-0.2% of the general population. The frequency in the United States is similar to that of the rest of the world. Ankylosing spondylitis primarily affects young males. Males are four to 10 times more likely to have ankylosing spondylitis than females. Most people with the disease develop it at age 15-35 years, with an average age of 26 years at onset.

Medical Author:

Must Read Articles Related to Ankylosing Spondylitis, Radiologic Perspective

Ankylosing Spondylitis, Neurologic Perspective
Ankylosing Spondylitis, Neurologic Perspective Ankylosing spondylitis (AS) is a long-term disease that affects the joints near the center of the body, especially the spine and sacroiliac joints. Symptoms inc...learn more >>
Ankylosing Spondylitis, Ophthalmologic Perspective
Ankylosing Spondylitis, Ophthalmologic Perspective Ankylosing spondylitis (AS) is a type of progressive arthritis that leads to chronic inflammation of the spine and the area where the spine joins the pelvis (sa...learn more >>
Ankylosing Spondylitis, Orthopedic Perspective
Ankylosing Spondylitis, Orthopedic Perspective Ankylosing spondylitis (AS) is a chronic inflammatory disorder of the spine and the connection of the spine to the pelvis (sacroiliac joints). Sacroiliac joint ...learn more >>
close

From Our Sponsor

Content under this heading is from or created on behalf of the named sponsor. This content is not subject to the WebMD Editorial Policy and is not reviewed by the WebMD Editorial department for accuracy, objectivity or balance.





Read What Your Physician is Reading on Medscape

Ankylosing Spondylitis »

Ankylosing spondylitis is a distinct disease entity characterized by inflammation of multiple articular and para-articular structures, frequently resulting in bony ankylosis.

Read More on Medscape Reference »


Medical Dictionary