Outcomes of Isolated Femoral Head and Polyethylene Liner Exchange in Revision Total Hip Arthroplasty

Purpose: In the existing literature, isolated femoral head and polyethylene liner exchange is commonly performed in revision total hip arthroplasty (THA) for a variety of indications with mixed outcomes. The purpose of this study is to investigate patient outcomes following head-liner exchange and risk factors associated with failure in THA. Materials and Methods: A retrospective chart review from May 2016 to November 2023 was conducted on patients who underwent isolated head-liner exchange at two institutions. Patients had minimum 1-year follow-up periods. For each patient, data such as indication for revision, surgical approach, revision head size, immediate and short-term complications, postoperative disposition, 90-day readmissions, and re-operations were recorded. No statistically significant associations were found between surgical approach and complications. Conclusion: This study suggests that, in the context of isolated head-liner exchanges, factors such as preoperative dislocation history, indication for revision, and discharge to SNF are associated with poorer outcomes and complications.