Pain often comes from a joint, muscle or tendon or from tissues around these. This pain is at least partly caused by inflammation. Injecting corticosteroid and/or local anaesthetic medication directly into the joint or the soft tissue helps to reduce the inflammation and provide pain relief. Reducing the pain may make movement easier and help other therapy to be more effective.
Ultrasound is used to guide the tip of the needle into the right place. Less commonly CT or x-rays are used.