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30.08.2015 | Original Paper

Pelvic tilt compensates for increased acetabular anteversion

verfasst von: Robert K. Zahn, Sarah Grotjohann, Heiko Ramm, Stefan Zachow, Michael Putzier, Carsten Perka, Stephan Tohtz

Erschienen in: International Orthopaedics | Ausgabe 8/2016

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Abstract

Purpose

Pelvic 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.

Methods

Pelvic 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.

Results

The 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 < 0.001; AA relative to the APP). Anterior tilting of the pelvis positively correlated with AA and individuals with high AA had a higher anterior pelvic tilt compared with those with low AA (p < 0.0001; AA relative to the APP).

Conclusions

AA 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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Titel: Pelvic tilt compensates for increased acetabular anteversion
verfasst von: Robert K. Zahn
Sarah Grotjohann
Heiko Ramm
Stefan Zachow
Michael Putzier
Carsten Perka
Stephan Tohtz
Publikationsdatum: 30.08.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: International Orthopaedics / Ausgabe 8/2016
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-015-2949-6

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Pelvic tilt compensates for increased acetabular anteversion

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Abstract

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Results

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