The Three Pillars of Shoulder Health. To fix nagging shoulder pain, always follow these rules: 1  Stop doing exercises that irritate the shoulders. 2  Get the shoulders to sit in the right position.  Get the shoulders to move properly.
Causes of Fluid on the Knee. 1  There can be the accumulation of fluid on the knee through rheumatoid arthritis or osteoarthritis. 2  There can be extra production of synovial fluid in the knee through arthritis. 3  Infection in the knee joint; the fluid on the knee is pus, and not synovial fluid.
Fluid on the knee from an infection could be an accumulation of pus in your joint instead of synovial fluid. Your doctor can take a sample of the fluid in your knee and have it tested to see what is causing it.ymptoms. Symptoms of fluid on the knee due to arthritis include swelling and tenderness. If your knee is inflamed, swollen, red and hot when you touch it, you probably injured your knee or have an infection.