Acetabular Version Measurement in Total Hip Arthroplasty: the Impact of Inclination and the Value of Multi-Planar CT Reformation

HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery
Michael LoftusBernard Ghelman

Abstract

The orientation of the acetabular cup component of a total hip arthroplasty can be evaluated in a number of ways, utilizing a myriad of imaging techniques and measurement parameters, including intraoperative surgical estimates, postoperative radiographs, and cross-sectional imaging such as computed tomography (CT) and magnetic resonance imaging (MRI). How do traditional versus corrected measurements of acetabular version vary from one another based on the inclination of the cup? What is the reliability of the corrected acetabular version measurements based on interobserver and intraobserver consistency? Two fellowship-trained musculoskeletal radiologists reviewed CT scans on 60 total hip arthroplasties. Acetabular inclination, traditional CT acetabular version, and CT acetabular version corrected for inclination (by utilizing multi-planar reformations to measure in the plane of the cup face) were each measured. The difference was then calculated between the "traditional" axial CT and "corrected" acetabular version measurements, and the association between this difference and the acetabular inclination was assessed. The "traditional" axial CT and "corrected" acetabular version measurements differed from one another in every case...Continue Reading

References

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Mar 3, 2011·Clinical Orthopaedics and Related Research·Harold J P van BosseDavid S Feldman

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Citations

Jan 8, 2017·International Journal of Computer Assisted Radiology and Surgery·Jaeyeong ParkShin-Yoon Kim
Jul 30, 2020·Medical & Biological Engineering & Computing·Meredith StadnykMarwan El-Rich
May 10, 2017·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Michel J Le DuffHarlan C Amstutz

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Methods Mentioned

BETA
total hip arthroplasty
imaging techniques
X-ray

Software Mentioned

Sectra

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