[Idiopathic femur head necrosis in the adult--relation to clinical and pathologic-anatomic findings].

For the research here presented, a total of 15 femoral heads with idiopathic necrosis in 15 patients, ranging in the age from 28 to 59 years, were available. In 7 of the histologically examined, in the occasion of endoprosthetic obtained femoral heads, a singular necrosis was to be discovered. In 6 items two attacks of necrosis, in 2 even three attacks could be confined. The comparison of these results with the clinically obtained case history showed that the second as well as the third attack of necrosis occurred during the first two years of the disease and partly obvious due to the increase of subjective symptoms. With the knowledge of these facts, it may be assumed that by means of exact observation of the patients concerned, even after diagnosis has been made, valuable tips to solve the up to now still unknown etiology of idiopathic avascular necrosis could be won.