Lower back pain is often made worse by tight muscle knots, called trigger points. These can form after injury, overuse, or poor posture and may cause aching, stiffness, or pain that spreads. A trigger point injection delivers medication directly into the tight muscle, allowing it to relax and release. This helps reduce pain, improve motion, and ease tension in the lower back. For long-term relief, injections are often paired with physical therapy to strengthen the core, correct posture, and prev