thoraco-acromial artery
The pectoralis major muscle therefore derives its blood supply from the pectoral branch of the thoraco-acromial artery, the lateral thoraci: artery and to a lesser extent the superior thoracic artery(ies) (Fig. 2).
What is the arterial supply of the pectoralis minor?
thoracoacromial artery
The blood vessel that supplies the pectoralis minor muscle is the thoracoacromial artery; a short artery that branches off from the larger axillary artery of the chest and upper extremities.
What is myofascial flap?
The myofascial flap variation carries no skin paddle and is utilized primarily to close small mucosal defects, to protect major vascular structures, and to support primary mucosal closure in a patient at increased risk of wound breakdown (prior radiation, diabetic, weight loss).
What is myocutaneous flap?
Myocutaneous flaps are compound flaps with a solitary vascular supply incorporating skin, subcutaneous tissue, fascia, and the underlying muscle. Once a pedicled or free-tissue transfer is performed, the newly transferred flap begins to incorporate into the surrounding tissue.
Is the pectoralis major an adductor or abductor?
Pectoralis major is a powerful adductor of the humerus. When its adducting effect is held in check by other muscles, it also produces internal rotation.
Where does pectoralis major attach?
Anatomy. The pectoralis major muscle inserts superiorly into the inferior clavicle, supero-laterally into the proximal humerus, and medially into the sternum. It extends down to the seventh rib.
Where does the pectoralis major insertion?
The insertion of the pectoralis major is at the lateral lip of the intertubercular sulcus of the humerus. There are 2 heads of the pectoralis major, the clavicular and the sternocostal, which reference their area of origin[1][2]. The sternocostal head is described as having between 2 to 7 distinct segments.
How long does a pectoral flap take to heal?
You will need to follow the following guidelines until your incisions completely heal. This is usually 6 weeks after your surgery. Your doctor will tell you how long to follow these guidelines for.
What is Pedicled flap?
Listen to pronunciation. (PEH-dih-kul …) A type of surgery used to rebuild the shape of the breast after a mastectomy. Tissue, including skin, fat, and muscle, is moved from one area of the body, such as the back or abdomen, to the chest to form a new breast mound.
Where does the thoracic artery supply the pectoralis flap?
The flap receives its blood supply from the thoraco acromial artery and the secondary segmental perforators arising from the internal mammory artery. The lateral thoracic artery does not usually contribute significantly to the vasculature of the pectoralis muscle.
How is the flap of the pectoralis major monitored?
Pectoralis Major Myocutaneous Flap and Myofascial Flap. “No Pressure” sign taped on patient’s chest near pedicle or written with marking pen on skin The flap is monitored by observation of color and needle-prick bleeding. Poor flap appearance may be improved with the use of dextran, steroids, and/or hyperbaric oxygen.
What is the vascular anatomy of the pectoralis major?
The vascular anatomy of the pectoralis major myocutaneous flap The vascular anatomy of the pectoralis major muscle and overlying skin and subcutaneous tissue was investigated in seventeen cadaver specimens by cannulation of the arterial supply and injection of contrast medium.
What is the length and diameter of the pectoral artery?
Length: 4.5 cm (range 3–5.5 cm) Diameter: 2 mm (range 1.5–2.5 mm) The pectoral artery is one of the dominant branches of the thoracoacromial artery. It pierces the clavipectoral fascia medial to the tendon of the pectoralis minor muscle and comes out at the groove between the clavicular and the sternocostal heads of the pectoralis major muscle.
