What are the causes of knee arthritis?
According to the American Academy of Orthopaedic Surgeons (AAOS), osteoarthritis of the knee typically occurs in knees that have experienced trauma, infection or injury. Other risk factors also increase the chances of developing knee arthritis.Trauma and InjuryPeople who have had either traumatic injuries to the knee, including sports injuries, or repetitive stress injuries are more likely to develop knee arthritis. Jobs that are likely to cause repetitive stress knee injuries involve kneeling or squatting, walking more than two miles a day, or lifting at least 55 pounds regularly.Job and Sports RisksThe AAOS reports that assembly line workers, computer keyboard operators, performing artists, shipyard or dock workers, miners and carpet or floor layers more often get osteoarthritis in the knee. Athletes in high-impact sports such as soccer, long-distance running and tennis also are more likely to develop knee arthritis.Physical FactorsAccording to the AAOS, women older than 50 are more
