Muscle flaps are sections of muscle tissue that are surgically moved from one part of the body to another. This technique is often used in reconstructive surgery to repair defects or injuries, providing both structural support and improved blood supply to the area. These flaps can be classified as either free or pedicled. Free flaps are completely detached and reconnected to new blood vessels, while pedicled flaps remain attached to their original blood supply. Common donor sites for muscle flaps include the latissimus dorsi and rectus abdominis muscles.