Collagen is a natural protein component of the skin that acts like a scaffold and the main building block for cells, tissues and organs. About a third of the protein content in your body is made up of collagen, which is found in the bones, muscles, and tissues of the organs.
1 There can be the accumulation of fluid on the knee after an accident. 2  In most cases, the fluid is blood which can be through a fracture caused to the knee. 3  The swelling of the knee often takes place within some minutes of the injury occurring. 4  Gout and pseudo-gout can also cause fluid on the knee.
1 Gout and pseudo-gout can also cause fluid on the knee. 2  Uric acid crystals can accumulate in the knee through gout, leading to the knee jointâs inflammation and swelling, while there also could be the formation of calcium crystals in the knee through pseudo-gout.he treatment method when your knee has fluid on it depends on how the fluid built up around or in the knee joint. These are some of the methods that may be considered: 1  Rest â The pain experienced in the knee will reduce with adequate rest, especially if fluid on the knee was caused by a traumatic injury.