Free
E-newsletter
Subscribe to Housecall
Our weekly general interest
e-newsletter keeps you up to date
on a wide variety of health topics.
close window
Mayo Clinic Housecall
Stay up to date on the latest health information.
What you get
- Free weekly e-newsletter
- Mayo Clinic expertise
- Recipes, tools and other helpful information
- We do not share your e-mail address
Tests and diagnosis
By Mayo Clinic staffDuring the physical exam, your doctor may check your muscle strength and reflexes. For example, you may be asked to walk on your toes or heels, rise from a squatting position and, while lying on your back, lift your legs one at a time straight in the air. Pain that results from sciatica will usually become worse during these activities.
Imaging tests
Many people have herniated disks or bone spurs that will show up on X-rays and other imaging tests but cause no symptoms. So doctors don't typically order these types of tests unless your pain is very severe or it doesn't improve within a few weeks.
- X-ray. An X-ray of your spine may reveal an overgrowth of bone (bone spur) that may be pressing on a nerve.
- Magnetic resonance imaging (MRI). This procedure uses a powerful magnet and radio waves to produce cross-sectional images of your back. MRI produces detailed images of bone and soft tissues such as herniated disks. During the test, you lie on a movable table inside the MRI machine.
- Computerized tomography (CT) scan. When CT is used to image the spine, you may have a contrast dye injected into your spinal canal before the X-rays are taken — a procedure called a CT myelogram. The dye then circulates around your spinal cord and spinal nerves, which appear white on the scan.
References
- Bradley WG, et al. Neurology in Clinical Practice. 5th ed. Philadelphia, Pa.: Butterworth-Heinemann Elsevier; 2008. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-7506-7525-3..X5001-8--TOP&isbn=978-0-7506-7525-3&uniqId=230100505-57. Accessed Aug. 2, 2012.
- Frontera WR, et al. Essentials of Physical Medicine and Rehabilitation: Musculoskeletal Disorders, Pain, and Rehabilitation. 2nd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/208746819-6/0/1678/0.html. Accessed Aug. 2, 2012.
- Hsu PS, et al. Lumbosacral radiculopathy: Pathophysiology, clinical features and diagnosis. http://www.uptodate.com/index. Accessed Aug. 2, 2012.
- Levin K, et al. Acute lumbosacral radiculopathy: Prognosis and treatment. http://www.uptodate.com/index. Accessed Aug. 2, 2012.
- Marx JA, et al. Rosen's Emergency Medicine: Concepts and Clinical Practice. 7th ed. Philadelphia, Pa.: Mosby Elsevier; 2010. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-323-05472-0..X0001-1--TOP&isbn=978-0-323-05472-0&uniqId=230100505-57. Accessed Aug. 2, 2012.
- Barbara Woodward Lips Patient Education Center. Radiculopathy. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2003.
- Knight CL, et al. Treatment of acute low back pain. http://www.uptodate.com/index. Accessed Aug. 9, 2012.
- Acupuncture for pain. National Center for Complementary and Alternative Medicine. http://nccam.nih.gov/health/acupuncture/acupuncture-for-pain.htm. Accessed Aug. 9, 2012.
- Shekelle P. Spinal manipulation in the treatment of musculoskeletal pain. http://www.uptodate.com/index. Accessed Aug. 9, 2012.
Find Mayo Clinic on