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Microdiscectomy (Microdecompression) Spine Surgery

by. Admin
31 January 2019
Microdiscectomy (Microdecompression) Spine Surgery

Typically performed for a herniated disc, a microdiscectomy relieves the pressure on a spinal nerve root by removing the material causing the pain.

During the procedure, a small part of the bone over the nerve root and/or disc material under the nerve root is taken out.

A microdiscectomy (also called a microdecompression) is usually more effective for relieving leg pain (also known as radiculopathy, or sciatica) than lower back pain.

  • For leg pain, patients will normally feel pain relief almost immediately after a microdiscectomy. They will usually go home from the surgery with significant pain relief.
  • For numbness, weakness, or other neurological symptoms in the leg and foot, it may take weeks or months for the nerve root to fully heal and any numbness or weakness to subside.

As general rule, microdiscectomy is considered a relatively reliable surgery for immediate, or nearly immediate, relief of sciatica from a lumbar herniated disc.

Minimally Invasive Microdiscectomy

There are two common options in an outpatient lumbar discectomy—microdiscectomy and endoscopic (or percutaneous) discectomy.

A microdiscectomy is generally considered the gold standard for removing the herniated portion of a disc that is pressing on a nerve, as the procedure has a long history and many spine surgeons have extensive expertise in this approach.

While technically an open surgery, a microdiscectomy uses minimally invasive techniques and can be done with a relatively small incision and minimal tissue damage or disruption.

Some surgeons have now gained sufficient experience with endoscopic or minimally invasive techniques, which involve doing the surgery through tubes inserted into the operative area, rather than through an open incision.

A microdiscectomy is typically performed by an orthopedic surgeon or neurosurgeon.

Indications for Microdiscectomy

If a patient's leg pain due to a disc herniation is going to get better, it will generally do so within about six to twelve weeks of the onset of pain. As long as the pain is tolerable and the patient can function adequately, it is usually advisable to postpone surgery for a short period of time to see if the pain will resolve with non-surgical treatment alone.

If the leg pain is severe, however, it is also reasonable to consider surgery sooner. For example, if despite nonsurgical treatment the patient is experiencing pain so severe that it is difficult to sleep, go to work, or perform everyday activities, surgery may be considered before six weeks.

These are typical reasons for recommending a microdiscectomy:

  • Leg pain has been experienced for at least six weeks
  • An MRI scan or other test shows a herniated disc
  • Leg pain (sciatica) is the patient’s main symptom, rather than simply lower back pain
  • Nonsurgical treatments such as oral steroids, NSAIDs, and physical therapy have not brought sufficient pain relief

The results of surgery are somewhat less favorable after three to six months have passed since the onset of symptoms, so doctors usually advise people not to postpone surgery for an extended period (beyond three to six months).

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