Spine Joints. Facet joints are places on the spinal bones where two bones actually meet and articulate, therefore a facet joint injection is into that place where they meet. Many times arthritis or inflammation can arise here and cause pain. Epidural injections are also helpful to reduce inflammation into the spinal canal area or around the spinal nerve roots exiting the spine.
Yes. Facet joints, like any other weight bearing joint can be injured andor become arthritic creating back pain or grow larger or give off cysts called synovial cysts which can pinch nerves leading to sciatic symptoms.