Total hip arthroplasty

The artificial total hip joint consists of an artificial acetabulum and an artificial femoral head. Both used metal in the past, and many complications have been proved in practice. At present, acetabular made of ultra high molecular polyethylene and artificial femoral head made of low-strength modulus metal are used at home and abroad. There are many types and designs of artificial total hip joints, mainly the diameter of the femoral head and the design of the acetabular surface fixed to the bone. Thicker acetabulum, a total hip made of artificial femoral heads with a relatively small diameter, has low friction in the acetabulum, stable acetabulum, and small local reactions. In addition to the complications of artificial total hip replacement, there are also local reactions caused by loosening, dislocation of the artificial acetabulum, and wear of the ultra-high molecular polyethylene surface of the weight bearing area.