What is the primary blood supply to the delto-pectoral flap?

The primary blood supply to the delto-pectoral flap is derived from perforators of the internal mammary artery. This flap is designed to transfer skin and subcutaneous tissue from the pectoral region to areas requiring reconstruction, often due to its anatomical positioning and vascular supply.

The internal mammary artery is known for its reliable perforators that penetrate through the pectoralis major muscle to supply the overlying skin. In the context of reconstructive surgery, these perforators are crucial as they provide adequate blood flow necessary for the survival of the flap.

Other sources like the axillary artery, suprascapular artery, and thoracoacromial artery can contribute to the vascular network in the shoulder and chest region, but they are not the primary blood supply for the delto-pectoral flap. The axial pattern of this flap mainly relies on the consistent and robust supply from the internal mammary artery, making its perforators the key to ensuring tissue viability after transfer.