1.How is the hip joint composed? The hip joint is the largest and deepest joint in the human body, consisting of two parts: the acetabulum located in the pelvis and the femoral head at the upper end of the femur. 2.What are the common diseases that cause hip pain? Femoral head necrosis, osteoarthritis of the hip joint, hip dysplasia, hip impingement syndrome and bursitis of the greater trochanter are common causes of hip pain. 3.When is it necessary to receive artificial total hip replacement? If the pain cannot be relieved by conservative treatment and serious damage to the hip joint is found by X-ray and other examinations, artificial total hip replacement can be considered. 4.What hip joint diseases are artificial total hip arthroplasty applicable to? Artificial total hip arthroplasty is suitable for various non-infectious hip arthritis, various infectious hip arthritis sequelae (infection completely controlled and sufficient time), advanced femoral head necrosis, displaced fracture of femoral neck in old age, old fracture of femoral neck with bone discontinuity and other diseases. 5.What is the purpose of artificial total hip arthroplasty? Artificial total hip arthroplasty is a surgical replacement of the diseased hip joint with a joint prosthesis made of artificial biological material, so as to eliminate pain, improve the function of the hip joint, correct hip deformity and improve the quality of life. 6.What is the effect of artificial total hip arthroplasty? It is one of the most successful and effective surgical procedures in the 20th century, with about one million patients gaining the ability to live close to normal life through this procedure every year. 7.Is there any surgical risk in artificial total hip arthroplasty? Any surgical procedure involves certain risks, and total hip arthroplasty is no exception, but the percentage of risks is very low. 8.What are the possible complications of artificial total hip arthroplasty? Complications of artificial total hip arthroplasty mainly include: infection around the prosthesis, joint dislocation, deep vein thrombosis, pulmonary embolism, fracture around the prosthesis, heterotopic ossification, unequal length of the lower limb, nerve and blood vessel injury, pain in the hip and thigh, bone resorption and osteolysis around the prosthesis, loosening of the prosthesis, fracture of the prosthesis stem, shattering of the prosthesis socket cup and ball head, etc. The overall incidence of complications is about 1%.