In the 1940s, with the progress of biomaterials and biomechanics, the development and application of artificial joints developed rapidly. 1960, British doctor Charnley vigorously promoted adhesive fixation of artificial joints, which made the artificial joint technology perfect. Modern artificial joint materials are mainly cobalt-chromium-molybdenum alloy, titanium alloy, ultra-high polymer polyethylene, aluminum trioxide ceramics and so on. The prosthesis is bonded to human bone tissue by adhesive or biological fixation. Bonding uses an adhesive to fix the artificial joint, which acts like a cement, hence the name “bone cement”. Biological fixation uses a special treatment to form tiny microscopic holes on the surface of the artificial joint, into which human bone tissue grows for the purpose of fixing the artificial joint in about 3 months. Please rest assured: the above materials have been strictly tested to ensure that they are harmless to human body. Composition of the artificial hip joint: The artificial hip joint includes: the femoral stem, the femoral head, the acetabulum and the polyethylene lining. The stem, head and socket are made of cobalt-chromium-molybdenum alloy, and the head can be made of ceramic. The lining is ultra-high polymer polyethylene. A prosthesis with only the femoral stem and head is called an artificial femoral head or hemi-acetabular prosthesis. Hip prostheses use “bone cement” or biological fixation. Which diseases are suitable for artificial hip replacement? 1. Age-related osteoarthritis; 2. Rheumatoid osteoarthritis; 3. Compulsory spondylitis affecting the hip joint; 4. Fracture of the femoral neck; 5. Femoral head necrosis; 6. Post-traumatic arthritis; 7. Congenital hip dysplasia or dislocation; 8. Periprosthetic hip tumor; 9. Old hip tuberculosis; 10. Old hip septic arthritis; 11. Failed joint osteotomy. If you have any of these diseases, are 55 years of age or older, and other treatments such as joint pain, deformity, and unstable medications have failed, you may consider artificial hip replacement. The most common patients who receive hip replacement are elderly osteoarthrosis and femoral neck fractures. Patients younger than 55 years old with rheumatoid arthritis and hip tumors may also receive hip replacement.