LLIF (Lateral Lumbar Interbody Fusion) -- Larry Parker M.D.

Later lumbar interbody fusion also known as XLIF or DLIF is the surgical removal of a lumbar disc and subsequent fusion of the intervening vertebra.
The lateral lumbar interbody fusion involves an approach through the flank rather than directly through the abdomen anteriorly or through the back posteriorly.
In selected cases, lateral lumbar interbody fusion can provide excellent decompression for spinal stenosis and correct malalignments in the lumbar spine including scoliosis or spondylolisthesis.
Lumbar fusion surgeries are indicated to treat symptomatic degenerative disc disease typically associated with instability such as spondylolisthesis and spinal stenosis. It may be done for more than one level of the lumbar spine.