The choice on no matter if to acquire surgery to deal with arthritis with the knee joint is dependent upon a number of elements, which include: The synovial membrane secretes synovial fluid (a clear, sticky fluid) around the joint to lubricate it. Ligament. A kind of tricky, elastic connective tissue https://www.theorthopaedicandpainpractice.com/the-benefits-and-risks-of-knee-replacement-surgery/