If causes which cannot be clearly defined as traumatic, result in vertebral fractures or disc ruptures, the expert frequently finds himself confronted with considerable problems. He must carefully establish the relation between what is due to the trauma and what must be attributed to the pre-existing damage. This requires the pre-existing nox to be objectively cleared, especially with regard to osteoporosis. The diagnosis "osteoporosis" should be subjected to particularly careful investigation, especially if the patient is a male. X-ray photographs, taken at an early stage, are insufficient. As consequences for the patient might be heavy, intensive methods of examination are justified. Anamnesis, progress and effect must be critically weighted, exceptions from the rule must be founded on careful and logical reasoning. The above article deals with such an exception.