Anterior axillary line

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Anterior axillary line
Axillary lines.png
The left side of the thorax with lines labeled
Latin linea axillaris anterior
Gray's p.1309
Anatomical terminology

The anterior axillary line (AAL)[1] is a coronal line on the anterior torso marked by the anterior axillary fold. It's the imaginary line that runs down from the point midway between the middle of the clavicle and the lateral end of the clavicle; the lateral end of the collarbone is the end closer to the arm.

The V5 ECG lead is placed on the anterior axillary line, horizontally even with V4.

External links[edit]


  1. ^ Logan, Carolynn M.; Rice, M. Katherine (1987). Logan's Medical and Scientific Abbreviations. Philadelphia: J. B. Lippincott Company. p. 3. ISBN 0-397-54589-4.