Pelvic tilt compensates for increased acetabular anteversion |
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| Authors: | Robert K. Zahn Sarah Grotjohann Heiko Ramm Stefan Zachow Michael Putzier Carsten Perka Stephan Tohtz |
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| Affiliation: | 1.Centre for Musculoskeletal Surgery, Department for Orthopaedics, Department for Traumatology,Charité-University Medicine Berlin,Berlin,Germany;2.Visualization & Data Analysis Medical Planning & Computational Medicine Groups,Zuse Institute Berlin (ZIB),Berlin,Germany;3.Department for Orthopaedics and Traumatology,HELIOS Klinikum Emil von Behring, Oskar-Helene-Heim,Berlin,Germany |
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| Abstract: | PurposePelvic tilt determines functional orientation of the acetabulum. In this study, we investigated the interaction of pelvic tilt and functional acetabular anteversion (AA) in supine position.MethodsPelvic tilt and AA of 138 individuals were measured by computed tomography (CT). AA was calculated in relation to the anterior pelvic plane (APP) and relative to the table plane. We analysed these parameters for gender-specific and age-related differences.ResultsThe mean pelvic tilt was -0.1?±?5.5°. Pelvic sagittal rotation displayed no gender nor age related differences. Females showed higher angles of AA compared with males (20.0° vs 17.2°, p?p? ConclusionsAA has to be calculated regarding pelvic sagittal rotation for correct acetabular orientation. Pelvic tilt is dependent on acetabular orientation and compensates for increased AA. |
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