If you have osteoarthritis that affects your knees, an injection of hyaluronic acid could help ease your pain and stiffness.
People with arthritis get these shots to help lubricate their joints so that they work more smoothly.
Your doctor can let you know if it would help you, based on your symptoms and other treatments you’ve tried. Though the shots have been available for more than a decade, studies on how effective they are have shown mixed results.