Alternatively, the caudal vertebral body superior articulating process (SAP) contributes to lateral recess and foraminal stenosis (see the image below). Indeed, facet hypertrophy between L4 and L5 vertebrae may impinge the L4 nerve root in the foramen and the L5 proximal nerve root sheath in the lateral recess. The 2 lower motion segments (L3-L4, L4-L5) are most commonly affected by degenerative stenosis. These segments are in a transition zone from the rigid sacrum to the mobile lumbar spine. In addition, the posterior joints in this area have less of a sagittal orientation, which affords more rotation and are therefore more vulnerable to rotatory strains.
What should I do and expect after the procedure?
You may have some partial numbness in your arms or legs from the anesthetic after the injection. This may last several hours but you will be able to function safely as long as you take precautions. You will report your remaining pain (if any) and also record the relief you experience over the next week in a âpain diaryâ which we will provide. *Mail or fax the completed pain diary in the envelope provided, so that your treating physician can be informed of your results and plan future tests and/or treatment if needed.