Anterior or posterior approaches create bone bridging from one vertebral level to the adjacent level. It is done with instrumentation (screws/rods) and bone graft. Both approaches can be done via an open technique or minimally invasively.
In preparation for the procedure, the patient is positioned and general anesthesia is administered. The surgeon creates an incision to access the lumbar spine.
The surgeon removes the lamina, the protrusion at the rear of the vertebra. This is the portion of the vertebra that covers the nerve roots. Removing the lamina creates more space for the nerve roots.
Next, the surgeon clears any bone or debris that may be pressing against the nerve roots. This relieves pressure and pain.
Bone Grafts Implanted
The surgeon places bone grafts against the vertebrae. The bone grafts may be harvested from the patient’s own body, typically from the pelvis. They may also be taken from another donor.
The surgeon inserts hardware to hold the vertebrae together. The surgeon may utilize screws and rods or plates.
End of Procedure
When the procedure is complete, the incision is closed and bandaged. The patient may be placed in a back brace to restrict movement of the spine. The patient will be able to leave the hospital after two or three days. As the spine heals, the bone grafts will fuse with the vertebrae to create a solid, stable mass of bone.