Lumbar Microdiscectomy

What is lumbar microdiscectomy?

Lumbar microdiscectomy removes the portion of a herniated disc that is pressing on a nerve in the lower back. The operation uses magnification and a focused exposure to reach the compressed nerve. Most of the disc is left in place, and fusion is not routinely part of the procedure.

The principal aim is relief of sciatica or other nerve-root symptoms. It does not replace the disc or reverse all degenerative changes in the spine. Distinguishing leg pain from unrelated back pain helps set realistic expectations.

When might it help?

Microdiscectomy may help when a lumbar disc herniation seen on imaging matches your leg pain, numbness, or weakness. Many disc herniations improve without surgery, so the decision considers the severity and course of symptoms as well as your examination.

Leg pain that interrupts everyday life

Shooting pain into the buttock, thigh, calf, or foot may prevent sitting, sleeping, working, or walking comfortably. Surgery can be considered when a suitable period of nonsurgical care has not restored an acceptable level of function.

Weakness or worsening nerve function

A new foot drop or progressive weakness needs prompt assessment. Significant neurological change may alter the timing of surgery rather than waiting through a standard course of conservative care. Bladder or bowel changes with saddle numbness require emergency evaluation.

A clearly matched disc problem

MRI helps locate the herniation, but the scan must fit your symptoms and examination. Hip disease, peripheral nerve problems, and other spinal conditions can produce overlapping symptoms. Removing a disc fragment will not address every cause of leg pain.

Understanding what can recover

Leg pain may improve before numbness or strength. A nerve that has been compressed for a long time may recover incompletely. Back pain can persist, and recurrent herniation is possible even after a successful initial operation.

RELATED CONDITIONS

What happens during surgery?

Under anesthesia, the surgeon reaches the involved level through the lower back. A small amount of bone or ligament may be removed to access the nerve safely. The offending fragment is removed, the nerve is checked for adequate space, and the wound is closed.

A focused operation

The goal is to remove the compressive material while preserving normal supporting structures. The incision and exposure depend on the fragment’s location, your anatomy, and any prior surgery.

Recovery is a gradual return to activity.

Many patients return home the day of surgery, although observation may be needed. Walking usually begins early. Incision soreness and temporary residual nerve symptoms can occur even when the original compression has been relieved.

Follow individualized guidance for sitting, lifting, bending, driving, and returning to work. Rehabilitation may help rebuild confidence and conditioning. A return to heavy work or sport should be gradual rather than based solely on an early reduction in pain.

Understand the tradeoffs.

Risks include infection, bleeding, spinal fluid leak, nerve injury, persistent symptoms, and recurrent disc herniation. Further decompression or another operation may be needed. Surgery does not remove the possibility of future disc degeneration.