In the introduction, the article says "The exact cause is unknown. A recent viral infection ... or a trauma have been postulated as precipitating event" and in the next paragraph we read "The diagnosis can be made in ... a young child who is not generally unwell and has no recent trauma." Regarding the topic of "trauma", aren't these two sentences mutually exclusive? —Preceding unsigned comment added by Mgwalker (talk • contribs) 16:27, 17 January 2010 (UTC)Reply
What is the blue in the illustration of the hip joint supposed to show? — Preceding unsigned comment added by LennartMimmi (talk • contribs) 12:30, 14 March 2023 (UTC)Reply
