Head and Neck Reconstruction in the Vessel Depleted Neck

Microvascular free tissue transfer has revolutionized reconstruction and subsequently functional outcomes in the head and neck, but requires suitable recipient vessels for successful results. Recipient vessels can be significantly compromised by prior surgery, radiation therapy, or existing and/or underlying vascular disease in the neck. When further microvascular reconstruction is required in the vessel-depleted neck, identification of appropriate vessels for anastomosis can be difficult and can present complex decisions for the surgeon as well as the patient. In this article, we review the available literature on the vessel depleted neck and the possible vessel options. We present critical strategies for preoperative treatment planning and vessel selection in these patients. We also discuss the benefits and limitations of arterial and venous options while commenting on our unique institution's experiences. The external carotid branches as well as the available subclavian artery branches are presented in detail. The venous anatomy is also described, with particular focus on the accompanying veins and cephalic vein. We provide guidance on the selection and modification of free flaps to achieve the greatest function and cosmetic outcomes in the vessel depleted neck. Our collection of advanced management techniques will provide surgeons with more options to manage the complexity of the vessel depleted neck, and to further help patients understand the risk and benefits of these selections.