Acetabular component orientation in total hip arthroplasty: The role of acetabular transverse ligament

Abstract

Objective: The aim of our study is to present the benefit of using the transvers acetabular ligament for intraoperative determination of the anteversion of acetabular component. Methods: Twenty-one total hip arthroplasties were performed. The transverse acetabular ligament was identified and used as a guide to position the acetabular component. Results: The mean anteversion angle was 16.9. None of the patients studied sustained a postoperative dislocation during this short follow-up period. Conclusion: We conclude from this preliminary study that the transverse acetabular ligament can aid positioning of the acetabular component of a THR. It defines the version of the acetabular component without the need for external instrumentation, and is independent of the position of the patient. Level of Evidence IV; Prospective Study.