Your doctor can use a number of helpful imaging studies to examine the structures
of your back, including your spine, if needed. Other tests assess the electrical
activity of your muscles and nerves. These tests are used to try to identify
the exact location and source of your pain.
An x-ray of your back may show a sign of an injury, infection, fracture, osteopenia
(loss of bone density), or tumor. However, most people with low back pain due
to strain or spinal problems have normal x-rays. If the results of an x-ray
are not definitive, your doctor may order a CT or MRI scan.
CT and MRI scans
Computed tomography (CT) and magnetic resonance imaging (MRI) can be used
to identify disk abnormalities and any other problems in the back. MRIs are
more accurate for soft tissue, but CTs are better for bones and small joints.
MRIs provide very clear pictures of all parts of the back, including muscles,
ligaments, and the vertebrae. These tests can also identify infections and
tumors if present.
Nerve and muscle studies
Based on your description of back pain, your physical exam, or any imaging
studies performed, your doctor may order studies to test the activity of your
back muscles and spinal nerves. Nerve conduction studies are done more often
than muscle testing. (Muscle testing can be quite painful.) Nerve condition
tests involve placing electrodes on your skin and applying small electrical
signals. With these shocks, the speed with which your nerves conduct the signal
Blood and urine samples may be used to test for infection, arthritis, or other
Review Date: 4/6/2007
Reviewed By: Benjamin D. Roye, M.D., M.P.H., Orthopaedic Surgery, The Mount Sinai Hospital, New York, NY. Review provided by VeriMed Healthcare Network.
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