Transforminal Lumbar Interbody Fusion (TLIF)
Transforaminal Lumbar Interbody Fusion (TLIF) is a surgical technique that involves removing an intervertebral disc and creating a spinal fusion in the lumbar spine through one incision in the back. It is similar to the posterior approach (PLIF) except that the disc removal is performed from the side. In some cases only one side of the disc needs to be exposed (right or left) in order to perform the procedure.
The TLIF procedure involves cutting into the middle of the layer of muscle and ligament that sits on either side of the spine. Using a special instrument that takes small bites off bone, the lamina is gradually removed to expose the nerves. The disc is removed through the right and left sides of the spinal canal (although sometimes all this can be done through one side only) and the intervertebral space is cleared, then packed with bone graft and either a bone block or cage implant. Instrumentation devises, such as pedicle screws, are then placed in the vertebrae to secure the fusion. Additional bone graft will often be placed to ensure a solid fusion.