Doctors use different techniques while diagnosing sciatica, and these range from uncomplicated physical tests to complex imaging procedures.
Depending on the severity of the pain and the extent of the condition, the doctor may choose the procedure he or she wishes to use.
Physical Tests - This is a standard procedure, involving certain exercises, such as lifting legs one at a time while lying on the back and walking on one's toes.
The pain experienced in sciatica patients worsens while performing these activities, thus allowing the doctor to narrow down the diagnosis.
In addition, the doctor will also take a medical history and a detailed physical examination of the legs and spine.
Imaging Procedures - If the pain in the lower half of the body lasts for more than a month, the doctor might recommend that the patient undergo an imaging procedure.
Depending on the severity of the disease, the doctor may choose one or more of the following procedures.
• MRI Scan - An MRI or Magnetic Resonance Imaging Scan can provide a thorough view of the back.
This allows the doctor to determine the cause of sciatica, through a comprehensive study of the scan.
This is the most sensitive imaging procedure for sciatica diagnosis.
• CT scan - A CT scan, or a Computerized Tomography Scan usually involves a dye that the doctor injects into the spinal canal.
The spinal cord and nerves absorb the dye, and these areas show up brightly on the scan, allowing a clear examination.
• Spinal X-Ray - While spinal columns do not usually show up on a normal X-ray, a spinal X-ray can help in the case of sciatica diagnosis by detailing the spinal area.
Thus, the diagnosis of sciatica is a complex procedure that depends on the severity of the disease and the available resources, in case of an imaging procedure.