Fig. 4
From: Posterior intercostal flap: an anatomical study and best flap design
A photograph of the right side of the back showing 5 lateral zone perforators (PL). They come of the intercostal spaces and supply the skin as direct cutaneous perforators. The uppermost one is the largest, it comes of the 4th space and divides into an upper branch (a) and lower branch (b), and each branch gives several perforators. The latissimus dorsi (Ld) is noted