[Free microsurgical latissimus dorsi muscular flaps in swine. In-vitro model for the experimental continuous development of microsurgical reconstruction in the head-and-neck area].

An in-vitro system for research into microsurgical transfer technology in head and neck reconstruction is presented for the first time: the free, muscular latissimus-dorsi-flap of the pig. This in-vitro-system is useful for training in microsurgical techniques, for biomechanical tests of vascular connections, and for the simulation of extracorporal circulatory systems in free flaps. This in-vitro system corresponds to human surgical conditions and anatomical proportions. It helps reduce the number of animals needed in microsurgical research and therefore complies with present legislation. The article outlines the surgical technique of raising and replanting the free flap and its cold storage.