Trunk (thorax, abdomen, back)

Clavipectoral Fascia

Fascia clavipectoralis

Origin

Inferior border of the clavicle

Insertion

Fuses laterally with the axillary fascia and distally forms the suspensory ligament of the axilla, which draws up the skin of the armpit

Function

Envelops and fixes the subclavius and pectoralis minor muscles, and forms a passage for vessels, nerves, and the cephalic vein between the pectoralis major and the underlying structures

Innervation

No independent motor innervation (connective tissue structure, not contractile tissue)

Movement & chain

Mechanically links clavicle to pectoralis minor and axillary floor; supports the shoulder girdle during arm elevation.

Palpation

Deep in the clavipectoral triangle (deltopectoral groove) below the clavicle; felt as deep tissue resistance medial to coracoid.

Clinical

Pierced by the cephalic vein, thoracoacromial artery, and lateral pectoral nerve; key surgical landmark in axillary lymph node dissection and breast surgery.

Segmental innervation

C5–C7 (pectoral nerves)

In clinical practice

Wound management post-laparotomy/chest drain and abdominal wall monitoring; support incision site during coughing to prevent wound dehiscence.

Region in the model

Trunk (thorax, abdomen, back)