The Pectoralis Major Muscle Advancement Flap is commonly used for sternoclavicular defect reconstruction. This technique involves elevating a flap composed of skin and subcutaneous tissue, beginning from an incision along the midline of the sternum. The Pectoralis Major Flap creates a broad cutaneous island, making it suitable for covering defects involving dual epithelial surfaces.

The muscular component of the flap effectively shields the bony structures of the neck and provides crucial protection to vital structures such as the carotid artery. This technique is particularly valuable in patients who have undergone radiation therapy, where robust tissue coverage and vascular support are essential for healing and long-term success.