axillstödets

Axillstödets, or the axillary support, refers to the anatomical and functional complex that stabilizes the axilla (armpit) and facilitates the passage of vessels, nerves, and lymphatics to the upper limb and thoracic wall. It is not a single structure but a network of tissues that together maintain the integrity and function of the shoulder region.

The axillstödets encompasses muscular boundaries, fascial layers, and neurovascular and lymphatic elements. Muscular contributions come from the pectoralis major and minor, latissimus dorsi, teres major, and serratus anterior, which shape the axillary space and provide dynamic support. Fascial components include the axillary fascia, clavipectoral fascia, and related suspensory structures. Neurovascular elements within or passing through the axilla—such as portions of the brachial plexus, the axillary artery and vein with their branches—alongside lymphatic channels and axillary lymph nodes, complete the functional framework.

Functionally, the axillstödets stabilizes the shoulder girdle and serves as a conduit for blood, nerves, and lymphatics to the arm, chest wall, and breast region. Its integrity is important for upper limb mobility and sensation. Clinically, the axilla is significant in breast cancer management and staging because many lymphatic pathways drain the breast through axillary nodes. Surgical procedures in this area, including axillary lymph node dissection or sentinel node biopsy, carry risks such as nerve injury and lymphedema. Trauma, infection, or inflammatory processes can affect the axillstödets, with potential impacts on arm function and sensation.

In Swedish anatomical usage, axillstödet denotes the armpit’s supportive framework; in English, the term is often described as axillary support structures. Terminology may vary between sources.