Osteoarthritis is the loss of cartilage that covers the bone and allows movement of the joint without pain. It is more common in women and the causes can be nutritional (overweight) and / or mechanical (lack or over exercise), genetic or traumatic injuries. The most affected joints are the spine, knee and hip. The treatment of osteoarthritis depends on the state of the joint. If osteoarthritis is not very advanced, treatments that try to slow its progress are indicated, such as biological medicine techniques (infiltration of growth factors, infiltration of hyaluronic acid, infiltration of collagen, infiltration of stem cells). When osteoarthritis has produced irreparable damage to the joint, the treatment indicated is surgery by vertebral arthrodesis, knee prosthesis, or hip prosthesis.