1. This document discusses the basic principles of amputations and disarticulations of the upper and lower extremities. It covers indications for amputations such as trauma, tumors, and vascular diseases. 2. Classification of amputations include primary, secondary, and re-amputation. Levels and types of amputations as well as steps in the amputation procedure are described. 3. Common complications include hemorrhage, infection, skin issues, and phantom pain. Mistakes can result in problems like conical stumps or bone necrosis. Successful amputation requires proper technique and aftercare.