Lumbar percutaneous mechanical disc decompression is a minimally invasive procedure used to treat selected cases of lower back and leg pain caused by a contained herniated disc. A herniated disc occurs when the soft inner material of a spinal disc pushes outward and irritates or compresses a nearby nerve. In the lumbar spine, this can cause low back pain, pain traveling into the butt or leg, numbness, tingling, or weakness. This pattern of symptoms is often called radiculopathy or sciatica.
The goal of disc decompression is to reduce pressure inside the affected disc and relieve irritation on the affected nerve. In the percutaneous mechanical decompression approach, a physician uses image guidance, such as fluoroscopy, to place a small needle or cannula through the skin and into the disc. A specialized device is then used to remove a small amount of disc material. By reducing the volume inside the disc, the pressure on the irritated nerve may decrease, which can help relieve pain and improve function.
This procedure is not intended for every person with back pain. It is generally considered for patients whose symptoms are linked to a contained disc herniation, meaning the disc material has bulged or protruded but has not fully ruptured or migrated far from the disc space. Candidates usually have symptoms that match imaging findings, such as MRI results, and have not improved enough with conservative care. Conservative care may include physical therapy, medication, activity modification, and sometimes spinal injections. A careful medical evaluation is necessary to determine whether this procedure is appropriate.
Because lumbar percutaneous mechanical disc decompression is performed through a small skin opening, it is minimally invasive. Many patients can go home the same day. The procedure may be performed with local anesthesia and mild sedation, depending on the patient’s condition and the physician’s recommendation. Recovery instructions often include a short period of limited activity followed by a gradual return to normal movement and rehabilitation. Physical therapy may be recommended to strengthen supporting muscles, improve flexibility, and reduce the risk of recurring symptoms.
As with any medical procedure, there are possible risks. These may include bleeding, infection, nerve irritation, increased pain, allergic reaction to medications or contrast dye, and, rarely, injury to nearby structures. Some patients may not experience meaningful pain relief, and others may later require additional treatments, including surgery. It is also important to understand that disc decompression does not reverse the underlying aging or degenerative changes in the spine. It is one tool that may help reduce symptoms when the source of pain is carefully identified.
Patients should seek urgent medical attention if they develop loss of bladder or bowel control, numbness in the groin or saddle area, rapidly worsening leg weakness, fever with severe back pain, or severe pain after a recent injury. These symptoms may indicate a serious condition that requires immediate evaluation.