The goal of steroid injection therapy is to alleviate pain stemming from inflamed spinal structures in the body. The injection itself is NOT a cure in the sense that it changes your anatomy by putting discs back into place, decompressing spinal stenosis, or reversing facet joint arthritis. What it CAN do is provide sufficient pain relief especially during an acute episode of pain allowing the patient to make further progress with a physical therapy and rehabilitation program and use less pain medication.
The injection delivers steroid medication directly (or very near) the pain generator and additionally the volume of medicine “flushes out” the inflammatory proteins and chemicals from the local area that may be contributing to the production of pain.
There are several types of injections and they are named after the body part that the medication is being injected: