Hip Replacement is a common surgery where the damaged hip joint is replaced with an artificial one (prostheses). The main purpose of the hip joints is to support the upper body when a person is standing, walking and running, and to help with certain movements, such as bending and stretching. Why would I need a Hip Replacement? ​It might be necessary for you to have a Hip Replacement if one (or both) of your hip joints becomes damaged and causes you persistent pain or problems with everyday activities such as walking, driving and getting dressed. Some common reasons why a hip joint can become damaged include: 1. osteoarthritis – so-called "wear and tear" arthritis, leading to the bones rubbing against each other 2. rheumatoid arthritis – this is caused by the body's own protective defence stem mistakenly attacking the lining of the joint, resulting in pain and stiffness ​3. hip fracture – if a hip joint becomes severely damaged during a fall or similar accident it may be necessary to replace it Many of the conditions treated with a hip replacement are age-related so hip replacements are usually carried out in older adults aged between 60 and 80. ​However, a hip replacement may occasionally be performed in younger people. ​ The purpose of a new hip joint is to: . relieve pain . improve the function of your hip . ​improve your ability to move around . improve your quality of life