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. 2015 Jun;49(12):828–834. doi: 10.1136/bjsports-2014-094436

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions

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Ultrasound appearance of a stage 2 subject (longitudinal section, superior is left in the image, anterior is upper). Note the cortical irregularity at the anterior and inferior aspect of the pubic symphysis.