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. 2022 Sep 23:1–10. Online ahead of print. doi: 10.1007/s00590-022-03396-8

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© The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 1 — Example of RPOH. A – Radiographs initially normal 3 months pre-presentation; B – joint space narrowing and lateral fragmentation 2 months pre-presentation; C – destruction of the femoral head and acetabulum at presentation.

Source Reproduced with permission from [8]