1. Injecting sodium hyaluronate does no harm to the body. It acts as a biological lubricant;

2. Ask your doctor about the joint surface during surgery. Is the damage serious? If so, it means that your surgery was done too late, which has already caused damage to the articular cartilage and will easily lead to osteoarthritis in the future. So the application of sodium hyaluronate at this time is just right. ;