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The Bone & Joint Journal
Vol. 99-B, Issue 12 | Pages 1584 - 1589
1 Dec 2017
Wassilew GI Heller MO Janz V Perka C Müller M Renner L

Aims

This study sought to establish the prevalence of the cross over sign (COS) and posterior wall sign (PWS) in relation to the anterior pelvic plane (APP) in an asymptomatic population through reliable and accurate 3D-CT based assessment.

Materials and Methods

Data from pelvic CT scans of 100 asymptomatic subjects (200 hips) undertaken for conditions unrelated to disorders of the hip were available for analysis in this study. A previously established 3D analysis method was applied to assess the prevalence of the COS and PWS in relation to the APP.