Prof. Dr. Sinis graduated from the Justus-Liebig University in Gießen. After spending time abroad in the USA and Australia, he found his access to plastic surgery as an assistant doctor at the Department of Hand and Plastic Surgery in Oldenburg. In 2002, he moved to the University Clinic for Hand, Plastic, Reconstructive and Combustion Surgery at the Berufs-genossenschaftliche Unfallklinik Tübingen, where he worked for a total of 8 years under the direction of Professor Hans-Eberhard Schaller. During this time he has learned all procedures of operative plastic surgery and hand surgery. In addition, he was appointed Senior Physician here and habilitated in 2009 in the field of Plastic Surgery.