Artificial hip arthroplasty clinical pathway standard inpatient procedure (a) Applicable objects. Various serious hip disorders such as femoral head necrosis, femoral neck fracture, acetabular dysplasia, rheumatoid arthritis, ankylosing spondylitis, osteoarthrosis, etc. Artificial hip joint replacement is required (ICD-9-CM-3:81.51-81.52) (B) Diagnostic basis. According to the Clinical Diagnosis and Treatment Guide-Orthopaedic Branch (edited by the Chinese Medical Association, People’s Health Publishing House), Surgery (Lower) (8-year and 7-year textbooks for clinical medicine, People’s Health Publishing House) (C) The choice of treatment plan and the basis. According to the Clinical Diagnosis and Treatment Guide-Orthopaedic Branch (edited by the Chinese Medical Association, People’s Health Publishing House), Surgery (Lower) (8-year and 7-year textbooks for clinical medicine, People’s Health Publishing House) (iv) Standard hospitalization days of 10-18 days. (v) Entry pathway criteria. Patients can enter the pathway when they have other disease diagnoses at the same time, but do not need special treatment during hospitalization nor affect the implementation of the clinical pathway process of the first diagnosis. (F) Preoperative preparation 1-5 days. 1.Mandatory examination items: (1) routine blood, routine urine, routine stool; (2) liver and kidney function, electrolytes, blood sugar, blood lipids; (3) coagulation function; (4) screening for infectious diseases (hepatitis B, hepatitis C, AIDS, syphilis, etc.); (5) frontal and lateral hip X-ray; (6) chest X-ray, electrocardiogram. (2) Echocardiography, blood gas analysis and pulmonary function (in case of advanced age or previous history of heart or lung disease); (3) Consultation with related departments if necessary. (vii) Selection of medication. 1.Antibacterial drugs: follow the Guidelines for Clinical Application of Antibacterial Drugs (Health Medical Development [2004] No. 285). 2.Prevention of venous thromboembolism treatment: refer to the Guidelines for Prevention of Venous Thromboembolism after Major Orthopaedic Surgery in China. 3. Pre-operative anti-osteoporosis treatment: refer to the Guidelines for the Treatment of Osteoporotic Fractures. (H) The operation day is the 1st-5th day of admission. 1. Anesthesia: nerve block anesthesia, intralesional anesthesia or general anesthesia. 2. Surgical method: hemi- or total hip arthroplasty. 3.Intraoperative implant: artificial hip prosthesis, bone cement. 4.Blood transfusion: depending on intraoperative bleeding. (ix) 6-14 days of post-operative hospital recovery. 1.Checkup items that must be reviewed: blood routine, front and side x-ray of the hip joint. 2. Check coagulation function, liver and kidney function, electrolytes, D-Dimer, and deep vein ultrasound/CTPA of both lower extremities if necessary. 3. Postoperative treatment: (1) Antibacterial drugs: follow the guideline of clinical application of antibacterial drugs (No. 285 of Health Care Development [2004]); (2) Postoperative treatment of prevention of venous thromboembolism: refer to the guideline of prevention of venous thromboembolism after major orthopedic surgery in China; (3) Postoperative treatment of venous thromboembolism: refer to the guideline of prevention of venous thromboembolism after major orthopedic surgery in China. (3) Postoperative anti-osteoporosis treatment: refer to the “Osteoporotic Fracture Treatment Guidelines”; (4) Postoperative analgesia: refer to the “Expert Recommendations for the Management of Common Pain in Orthopedics”; (5) Postoperative rehabilitation: active exercise is the main focus, supplemented by passive exercise. (J) Discharge criteria. 1, normal body temperature, no significant abnormalities in routine laboratory indicators. 2.Good wound healing: drainage tube removed, no signs of infection in the wound (or wound conditions that can be treated in the outpatient clinic), no skin flap necrosis. 3.Postoperative X-ray confirmed that the position of the prosthesis was satisfactory and the hip joint on the replacement side was stable. 4. There are no complications and/or comorbidities that require hospitalization. (XI) Analysis of variants and causes. 1, Perioperative complications: deep vein thrombosis, wound infection, fracture, dislocation, neurovascular injury, etc. resulting in longer hospitalization days and increased costs. 2, medical comorbidities: elderly patients are often combined with other medical diseases, such as cerebrovascular or cardiovascular disease, diabetes, thrombosis, etc. Fracture surgery may lead to the aggravation of these diseases and require further treatment, thus prolonging the treatment time and increasing hospitalization costs. 3, the choice of artificial hip prosthesis: due to the different conditions of patients, the choice of different types of joint prosthesis may lead to differences in hospitalization costs.