An efficient medical rehabilitation is an important part of a modern health care system. There should be no doubts about its necessity. The medical rehabilitative system in Germany however, as it is organized by the sick-insurances and the annuity-insurances, does not fulfil all the claims urgently required. Much criticism seems really correct: the missing scientific basis of rehabilitation, the poor flexibility around the administrative procedures of application and performance, which is inadequate to medical needs, the nearly total absence of any negative selective criteria on the one hand and the huge problems in finding out those persons badly needing rehabilitative measures on the other, and last not least the uncertainty regarding the real economic benefits of the total enterprise of rehabilitation as it is actually practised.