A "free flap" is a surgical technique used in reconstructive surgery where a piece of tissue, including skin, muscle, or fat, is removed from one part of the body and transplanted to another area. This tissue is carefully detached along with its blood vessels and then reattached to the new site using microsurgery. This method is often employed to repair defects caused by trauma, cancer, or congenital conditions. The success of free flap procedures relies on the precise connection of blood vessels to ensure proper blood flow to the transplanted tissue. Surgeons often use free flaps to restore function and appearance in areas such as the face, breast, or limbs. This technique allows for more natural-looking results compared to other methods, as it utilizes the patient's own tissue.