Clinical Study Of Total Hip Arthroplasty

Total hip arthroplasty is the best way to solute end-stage hip diseases which always accompany with joint pain, deformity, lack of ROM and other dysfunctions. The modern total hip arthroplasty begins with the use of Charnley low-friction joint. Since then, with developing of manufacturing technology, emerging of new types of materials, researching bio-mechanics in-depth and improving method of prosthesis fixation, protheses'survival rate were continuously improving and a satisfied outcome were obtained. How to prevent or treat complications are what researches focus on currently. The purpose of this study in our hospital are comparing outcomes between different diseases, verifying indications, observing outcomes between different protheses, and assessing the relationship between surgical techniques and complications. The aim of the study is to improve the efficacy of total hip arthroplasty, prevent complications, and provide some references for future medical works.555 patients who have total hip arthroplasty in our hospital between Jan. 1996 and May 2007 have enrolled in this study. The Harris hip score and Barthel index are used to record functions of the hip. And comparison was made between per-operation and post-operation.The response rate of this follow-up study is 23.96%, that is, 146 hips of 133 patients'data are complete. The period of follow-up is from 8 months to 140 months, average 49 months. The Harris hip scores and Barthel index are significantly higher after total hip arthroplasty. The rate of good work is 82.20% in import prostheses and 64.29% in domestic prostheses. The largest number of postoperative complications is the thigh pain, a total of eight cases, which followed by the rest, heterotopic ossification, intraoperative fractures, stress ulcer, loosening, nerve injury, deep venous thrombosis.The function of hip has significantly improved after total hip arthroplasty. Concerning unsolvable joint pain, deformity and dysfunction with other ways, total hip arthroplasty can be use in accordance with the requirements of patients without rigidly adhere to the age limit. Elderly patients who have long life expectancy, large activity amount and high demand of activity also can consider total hip arthroplasty. There are no significant difference between domestic prostheses and import ones. The high rate of lost of follow-up is a key factor which influence the results a lot. The nationwide registration system of artificial joints is imperative.