Description:
Lumbar radicular pain, also known as sciatica, refers to pain that begins in the lower back and radiates down one of the legs. It is commonly caused by a herniated (or prolapsed) lumbar intervertebral disc. The herniation is a result of a protrusion of the nucleus pulposus through a tear in the surrounding annulus fibrosus. The annulus fibrosus may rupture completely resulting in an extruded disc, or may remain intact but stretched resulting in a contained disc prolapse. This may then compress one or more nerve roots, resulting in pain, numbness or weakness in the leg.
Conservative treatments include the use of analgesics, non steroidal anti-inflammatory medicines, physical therapy and hot or cold compresses. Epidural injections of corticosteroid may also be used. Surgery to remove disc material is considered if there is nerve compression or persistent symptoms that are unresponsive to conservative treatment.
Surgical techniques include open repair procedures and minimally invasive alternatives using percutaneous approaches.
Automated percutaneous mechanical lumbar discectomy is performed using local anaesthetic with or without conscious sedation. Under fluoroscopic guidance, a cannula is placed centrally within the disc using a posterolateral approach on the symptomatic side. A probe connected to an automated cutting and aspiration device is then introduced through the cannula. The disc is aspirated until no more nuclear material can be obtained.
There are a number of different devices available that are used to perform this procedure.
|
