ABSTRACT
<p><b>OBJECTIVE</b>To study the clinical outcome of total hip arthroplasty(THA) for traumatic arthritis after acetabular fracture.</p><p><b>METHODS</b>From June 2010 to June 2014, 33 hips in 33 patients with traumatic arthritis after acetabular fracture were retrospective analyzed including 21 males and 12 females with a mean age of 44.6 years old. All the patients received THA with bio-prostheses. Harris score was used to evaluate the hip function of patients before and after operation, the X-ray was adopted for radiographic evaluation of the hip prosthesis.</p><p><b>RESULTS</b>All patients were followed up for 7 to 38 months with an average of 21.6 months. The Harris score increased from preoperative 53.6±2.4 to 94.0±3.0 at the final follow-up, the difference was statistically significant(=55.37,<0.05). The X-ray evaluation showed the prosthesis was in good position, no loosening of the prosthesis, dislocation and periprosthetic osteolysis.</p><p><b>CONCLUSIONS</b>THA is an effective treatment for the traumatic arthritis after acetabular fracture;internal fixation of acetabular fractures could not be removed if it shows difficult but does not affect the prosthesis placement.</p>