Intra-articular joint injections are a medical procedure where medication, typically a corticosteroid, hyaluronic acid, or local anaesthetic, is injected directly into a joint to relieve pain, inflammation, or improve mobility. This procedure is commonly used to treat conditions that affect the joints, such as arthritis, bursitis, or joint degeneration. It is especially helpful for managing pain and inflammation in weight-bearing joints like the knee, shoulder, hip, or ankle.