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Published online 2009 May 1. doi: 10.1007/s11999-009-0853-3
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Fig. 5

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An intraoperative image of a surgically dislocated femoral head of a protrusion hip shows severe cartilage abrasions of the posterior contour of the head with a corresponding acetabular cartilage lesion (not shown). With head relocation, the impingement mechanism can be reproduced, and the mode of origin of the “contre coup lesion” [30] can be observed.

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