Abstract
ABSTRACTObjective: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.
Highlights
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
Acetabular cup positioning has a significant effect on the outcome of total hip arthroplasty (THA)
Positioning of the acetabular component in THA has been shown to affect the range of motion of the hip, wear of the polyethylene, and the rate of pelvic osteolysis, being of paramount importance in minimizing the risk of dislocation.[5,6,7,8]
Summary
Acetabular cup positioning has a significant effect on the outcome of total hip arthroplasty (THA). It affects dislocation rate, component impingement, edge loading, accelerated bearing surface wear and osteolysis and/or loosening.[1] In the course of surgery, the most important step is cup orientation. The position on the operating table, dislocation of the native hip and the use of retractors alter the pelvis and, acetabular version.[2] Several methods have been described in the literature and several devices are available from THA prosthesis manufacturers to help correct cup placement. Many authors have described the transverse acetabular ligament (TAL) as a patient-specific reference point in determining the correct acetabular anteversion. The aim of our study is to resent the benefit of using the transvers acetabular ligament for intraoperative determination of the anteversion of acetabular component
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