Lecture №3 "The doctrine of the amputations".Presentation of lectures for students of the medical faculty of the medical schools.Presentation consistently reveals:the history of the doctrine of amputations; indications for amputations;classification of amputations and features of the main technical stages of this operation. At the end of the lecture describes the rationale of the extrafocal compression – distraction metal osteosynthesis, as an alternative to one of the indications for amputation.