Alcon GenTeal Gel Sterile Lubricant Eye Gel ( 10g ) Eden Pharmacy Gel injections (also called viscosupplementation) are used to treat joint pain from arthritis, especially in the knee. The gel acts as a lubricant and shock absorber inside the joint, helping reduce friction, Gel injections for the knee are used to improve joint lubrication and reduce pain caused by arthritis and joint degeneration., Over time, the natural fluid inside the knee loses its ability to A gel injection for the knee helps improve joint lubrication when natural synovial fluid becomes thinner or less effective, which often happens with arthritis., This gel acts as a cushion and