This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water â hence the name photosynthesis, from the Greek Ïá¿¶Ï, phÅs, light, and ÏÏÎ½Î¸ÎµÏÎ¹Ï, synthesis, putting together.
The human body's own cartilage is still the best material for lining knee joints. This drives efforts to develop ways of using a person's own cells to grow, or re-grow cartilage tissue to replace missing or damaged cartilage.
Other injuries that can lead to knee swelling include cartilage or meniscus tears, and knee overuse, which may lead to irritation, states Mayo Clinic. Conditions that can give rise to swollen knees include bursitis, osteoarthritis, rheumatoid arthritis, tumors and infections. Cysts, gout and pseudogout may as well cause knees to swell. Risk factors for swollen knees include advanced age and obesity, explains Mayo Clinic.