Outcomes of total hip arthroplasty are similar for patients with displaced femoral neck fractures and osteoarthritis.

This study attempted to evaluate whether total hip arthroplasty for displaced femoral neck fractures had significantly different outcomes when compared with total hip arthroplasty for osteoarthritis. This is a retrospective study of 60 patients who had total hip arthroplasties between 1997 and 2001. Thirty patients (mean age, 79.7 years) had total hip arthroplasties for displaced femoral neck fractures; 30 patients (mean age, 76.9 years) were treated with total hip arthroplasties for osteoarthritis. The same surgeon used the modified lateral approach for all surgeries. All patients had radiographic assessment, physical examination, and evaluation with the Harris hip score. The mean followup was 38 months. The mean Harris hip score for the 25 patients treated with a total hip arthroplasty for a femoral neck fracture was 81 points; the mean hip score for the 27 patients treated with a total hip arthroplasty for osteoarthritis was 87 points. No statistically significant differences between these groups were observed. Patients who were treated with a total hip arthroplasty for a femoral neck fracture did not have increased perioperative morbidity compared with patients who had a total hip arthroplasty for osteoarthritis. This study suggests that the outcomes for total hip arthroplasties in this consecutive series of patients treated for displaced femoral neck fractures and osteoarthritis are comparable.