This article describes the method and result of an authorized German translation of the Motor Assessment Scale (MAS) - a measurement tool to scale motor function after stroke. The MAS is widely known in English speaking countries and is used as an outcome measure in clinical trials. It has been well researched regarding its psychometric characteristics. The translation is based on a methodical process according to the guidelines of the American Academy of Orthopaedic Surgeons. A synopsis was produced from two German initial translations, and an English back translation was performed to check the correctness of the content. The publication of the German version of the MAS aims to improve the outcome measurement in the area of rehabilitation after brain lesion.