Dual Mobility Acetabular - Cup Total Hip Arthroplasty after Femoral Neck Fracture in the Elderly: Prospective Study on Risks of Early Dislocation in 80 Total Hip Replacements

Background: Total Hip Arthroplasty (THA) for femoral neck fractures in the elderly is still lauded as one of the most successful surgeries of the century with good short and medium term outcomes.Postoperative dislocation remains the mainset back of hip replacement in the elderly.This study mainly sees keto assess early outcomes of total hiparthroplasty using dual mobility acetabular cup for femoral neckfractures in the elderly with emphasis ondislocation. Patients and Methods:We carried out 80 consecutive total hip replacements using a double articulating acetabular component.We assessed dislocation rates after 6 months and cumulative risks in the years following replacement.Results: After a mean follow-up of 50 months, only 8 (10%) deaths were recorded.We observed 1 case of dislocation at 4 months postoperatively that required revision arthroplasty.No case of instability was recorded.Conclusion: Dual mobility acetabular cups remain suitable implants in the face of postoperative dislocation after total hip replacement for femoral neck fractures in the elderly.