It is surgery to replace all or part of the hip joint with an artificial joint, which is called a prosthesis. The hip joint consists of two main parts. One or both sides can be replaced during surgery:
- The hip socket (part of the bone of the pelvis called the acetabulum)
- The upper end of the femur (femoral head called)
The new hip to replace the old hip is composed of the following parts:
- A drink, usually made of strong metal.
- An insert, which fits into the cup or acetabulum, usually, is plastic, but some surgeons are now trying other materials like ceramic. The liner allows the hip to move smoothly.
- A metal or ceramic ball that will replace the round head (top) of the femur.
- A metal stem that is attached to the femur to give more stability to the joint.