What is a facet joint cyst?


What is a facet joint cyst? A facet joint cyst is a fluid-filled sac that is an out-pouching of the capsule that surrounds the facet joints.  Facet joint cysts are typically found in the lumbar spine and are most often related to degeneration.  The facet joint cysts can be present in the neuroforaminal space or in the extra-foraminal area.  When the cyst is located in the neuroforaminal space, patients may experience radicular legs symptoms and discomfort.    When the cyst … Read More