The principles of fracture fixation aim to ensure fractures heal properly and patients return to normal function. They include: 1) Restoring anatomical relationships through fracture reduction to realign displaced bone fragments. 2) Providing absolute or relative stability through fixation methods like plates or external fixators to hold the reduction. 3) Preserving blood supply by minimizing soft tissue and bone trauma during reduction and fixation to support healing. 4) Allowing early and safe mobilization through exercise to promote healing and prevent complications while the fracture mends.