Lumbar Facet Nerve Block
A Lumbar Facet Nerve Block (LFNB) is a diagnostic test that will help determine if your pain is being caused by the facet joints, which are located on the side of your spine and often cause pain in the lumbar region.
During the procedure, a small amount of local anesthetic will be injected onto the nerve that will bring sensation to the facet joints in your lower back. If your pain resolves after the block, the doctor may consider that your facet joints are responsible for some of your pain.
The length of the procedure takes only approximately 15 minutes, but allow at least 45 to 60 minutes for the entire process.
Facet Nerve Blocks are done bilaterally or unilaterally based on the location of your pain, and may be performed in a series of two. The test will be conducted on one side of the spine, and then the patient will return for the opposite side to be tested.