[Stress fractures].
The clinical and radiologic picture of the rarely known stress fracture is illustrated by a case study of a calcaneus lesion. Two different aspects of the radiologic findings depending on localisation are demonstrated, and a third variant course without radiologic signs is postulated. It has to be emphasized that the typical stress fracture of the spongiosa has features that do not correspond to the common pictures of a fracture. It is, therefore, often overlooked in the beginning. A complete fracture can thus develop, necessitating a surgical stabilisation, i.e. of the head of the femur. Therefore, early diagnosis is essential.