Abstract:Objective: To analyse and evaluate the treatment of total hip replacement(THR), to discuss the causes, prophylasis and treatment of dislocation after total hip replacent. Methods: 152 patients (157 hips) underwent THR from January 1995 to June 2001 in Xiangya Hospital. The series of patients included 73 male and 89 female, with an average age of 56 years old. The symptom and sign before and after operation during follow-up, preoperational preparation, transaction preopration and postoperation were evaluated. Results: Of the 152 cases (153 hip), 5 cases were dead, 5 cases lost follow-up, the others were followed up for mean 4.1 years (from 1.5 years to 8.0 years). The dislocation of the hip was in 4 cases, the rate of dislocation was 2.74%. Conclusion: With the use of appropriate size of femoral head and proper method of carry, to retain proper angle of abduction and anteversion, the rate of dislocation can be decreased effectively.