Craiovan, B. and Weber, M. and Worlicek, M. and Schneider, M. and Springorum, H. R. and Zeman, F. and Grifka, J. and Renkawitz, T. (2016) Measuring Acetabular Cup Orientation on Antero-Posterior Radiographs of the Hip after Total Hip Arthroplasty with a Vector Arithmetic Radiological Method. Is It Valid and Verified for Daily Clinical Practice? ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN, 188 (6). pp. 574-581. ISSN 1438-9029, 1438-9010
Full text not available from this repository. (Request a copy)Abstract
Purpose: The aim of this prospective study is to validate a vector arithmetic method for measuring acetabular cup orientation after total hip arthroplasty (THA) and to verify the clinical practice. Materials and Methods: We measured cup anteversion and inclination of 123 patients after cementless primary THA twice by two examiners on AP pelvic radiographs with a vector arithmetic method and compared with a 3D-CT based reconstruction model within the same radiographic coronal plane. Results: The mean difference between the radiographic and the 3D-CT measurements was - 1.4 degrees +/- 3.9 degrees for inclination and 0.8 degrees +/- 7.9 degrees for anteversion with excellent correlation for inclination (r = 0.81, p < 0.001) and moderate correlation for anteversion (r = 0.65, p < 0.001). The intraclass correlation coefficient for measurements on radiographs ranged from 0.98 (95 %-CI: 0.98; 0.99) for the first observer to 0.94 (95 %-CI: 0.92; 0.96) for the second observer. The interrater reliability was 0.96 (95 %-CI: 0.93; 0.98) for inclination and 0.93 (95 %-CI: 0.85; 0.96) for anteversion. Conclusion: The largest errors in measurements were associated with an extraordinary pelvic tilt. In order to get a valuable measurement for measuring cup position after THA on pelvic radiographs by this vector arithmetic method, there is a need for a correct postoperative ap view, with special regards to the pelvic tilt for the future. Key points: Measuring acetabular cup orientation on anteroposterior radiographs of the hip after THA is a helpful procedure in everyday clinical practice as a first-line imaging modality. CT remains the golden standard to accurately determine acetabular cup position. Future measuring on radiographs for cup orientation after THA should account for integration of the pelvic tilt in order to maximize the measurement accuracy. Citation Format: Craiovan B, Weber M, Worlicek M et al. Measuring Acetabular Cup Orientation on Antero-Posterior Radiographs of the Hip after Total Hip Arthroplasty with a Vector Arithmetic Radiological Method. Is It Valid and Verified for Daily Clinical Practice?. Fortschr Rontgenstr 2016; 188: 574-581
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PLAIN ANTEROPOSTERIOR RADIOGRAPHS; COMPONENT POSITION; PELVIC TILT; NAVIGATION; ANTEVERSION; RELIABILITY; REPLACEMENT; VERSION; THA; total hip arthroplasty; cup orientation measurement; error analysis; pelvic tilt |
| Divisions: | Medicine > Lehrstuhl für Orthopädie Medicine > Zentren des Universitätsklinikums Regensburg > Zentrum für Klinische Studien |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Mar 2019 09:24 |
| Last Modified: | 22 Mar 2019 09:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2824 |
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