Abstract
1. The findings in a femoral head obtained at necropsy on a boy aged nine suffering from Perthes' disease are described.
2. The findings revealed that there had been avascular necrosis of the epiphysis followed by revascularisation and healing, and there was evidence to suggest a second episode of infarction.
3. The findings provide strong support for the suggestion that Perthes' disease is the result not of one but of more than one episode of major infarction.
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