Pectoral fascia

Illustration of the pectoral fascia and its surrounding structures.

The pectoral fascia is a thin layer of connective tissue that envelops the pectoralis major muscle. It is an important anatomical structure in the thorax region, providing support and protection to the underlying muscles and tissues.

Anatomy

The pectoral fascia is continuous with the axillary fascia laterally and the clavipectoral fascia superiorly. It is attached to the sternum medially and extends laterally to blend with the fascia of the latissimus dorsi muscle. Inferiorly, it is continuous with the fascia of the abdominal wall.

Layers

The pectoral fascia is part of the superficial fascia of the thorax. It lies deep to the skin and subcutaneous tissue, and superficial to the pectoralis major muscle. Beneath the pectoral fascia, the pectoralis minor muscle is found, covered by the clavipectoral fascia.

Function

The primary function of the pectoral fascia is to provide a protective layer over the pectoralis major muscle. It also serves as a site of attachment for the breast tissue in females and helps to maintain the structural integrity of the thoracic region.

Clinical Significance

The pectoral fascia is often involved in surgical procedures, such as mastectomy and breast reconstruction. Understanding its anatomy is crucial for surgeons to avoid complications and ensure proper healing. It is also relevant in the spread of infections or malignancies within the thoracic region.

Related Pages

• Pectoralis major
• Pectoralis minor
• Clavipectoral fascia
• Axillary fascia
• Thorax