The synovium membrane is found in joints like your knee and shoulder. This thin membrane surrounds the inner lining of your joint and may have folds and fringes. Its main function is to create synovial fluid, which helps nourish and lubricate your joint.
When part of your synovium becomes inflamed, it can cause your entire joint to swell and become tender. In this minimally invasive procedure, your surgeon makes a small incision and inserts a scope with a specialized tool to remove the inflamed tissue.