Pedicle length is of an average of 8.45 ± 0.48 mm, including 1 artery (the posterior circumflex humeral artery with an average diameter: 3.17 ± 0.71 mm and it's cutaneous artery: 1.38 ± 0.13 mm), 1 or 2 collateral veins with average diameter of large branch of about 3.51 ± 0.17 mm and small branch of about 2.62 ± 0.12 mm.