Laminectomy

What is a laminectomy?

As one of the most common back surgeries performed in the United States, a lumbar laminectomy is a procedure in which the surgeon removes the rear portion of one or more vertebrae. Ligaments and bone spurs that are pressing on your spinal nerves may also be simultaneously removed. This procedure will provide the compressed nerve root with more space and an environment for better healing.

What happens during a lumbar laminectomy?

In a lumbar laminectomy, an incision is made in the lower (lumbar) back. The spinous processes and lamina in the affected area are removed. The source of the spinal nerve decompression—bone spurs or degenerated discs, for example—is also removed to relieve the pressure exerted on the spinal nerves.

Instrumented Fusion

In a lumbar laminectomy with instrumented fusion, the top layer of the transverse processes of the vertebrae are removed to create a space for the fusion site. Then, instrumentation such as screws and rods are inserted for stabilization of the spine. Finally, a bone graft is used to fuse the spine.

Uninstrumented Fusion

In a lumbar laminectomy with uninstrumented fusion, the fusion is performed without the use of instrumentation.

Most lumbar laminectomies are performed with general anesthesia and mechanical ventilation. During the procedure, you will be in a face down position in order to provide the surgeon with access to your back. An incision will be made in the affected area, and the surgeon will approach the spine then remove the lamina bone and trim facet joints that are compressing your spinal nerves. Following surgery, most patients will go home after an overnight stay.