Gel injections help cushion and lubricate the knee jointespecially useful for patients with osteoarthritis or cartilage wear. By improving joint movement and reducing friction, these injections help relieve pain, delay more invasive What Are the Different Types of Knee Injections? (Gel, PRP & Stem Cells) Can you avoid knee surgery with viscosupplementation? Peak Health and Wellness A gel injection for the knee is often used when the joint loses some of its natural lubrication, which can happen with arthritis or cartilage wear., The gel acts as a lubricant and shock absorber Corticosteroid vs. Gel Injections for Joint Pain Which is right ? City Orthopaedics & Sports Medicine: Shoulder, Knee, & Hip Surgeon