[Legal problems in obstetrics. On the "liability of the expert witness"].

There has been a depressing increase in claims for damages and associated civil code and legal code proceedings in medicine in general (as the term "defensive medicine" illustrates) that exercises considerable influence on medical activities in obstetrics, not always to the benefit of the patients. In what manner and to what extent the expert can and must influence legal decisions, is demonstrated by means of a few examples such as management of parturition in case of breech presentation, causal assessment of psychomotoric retardation in postnatal life and the management of dystocia in shoulder presentation. If judges and attorneys are blamed-as is often the case-one should always also consider the significance of expertising activities. Typical errors occurring during expert assessment are pointed out. This shows the high degree of responsibility that has to be shouldered by the expert when he advises judges and/or attorneys. Expertising activities should be directed to a greater measure than in recent years, at delivering expertises restricted to the factual situation without involving emotions. This would at the same time reduce the influence of judges, attorneys and lawyers on our medical activities, an influence that has recently been much deplored.