Abstract: The invention relates to a system for validating and training surgical interventions in human and veterinary medicine, which includes a training model anatomically modelled after a human or animal body. The system comprises an anatomical reproduction of a body part of the human or animal body, which has a recess and an anatomical reproduction of an interchangeable practice region, which is designed to be insertable into the recess of the body part. The interchangeable practice region has a front side and a rear side, wherein the rear side is connected at least in part in an interlocking manner to the recess of the anatomical reproduction of the body part. The system also comprises an optoelectronic detection means, which is situated in the recess of the anatomical reproduction of the body part such that it is designed for detecting the surgical interventions and for monitoring the positioning of surgical instruments and/or implants on the rear side of the interchangeable practice region.