Arterial branches: the brachial profundal artery and the superior ulnar col-lateralartery originate directly from the axillary or brachial artery in 47.88% of 330sides.
However, caution is advised if the alar base has been previously excised, if the alar base incisions extend more than 2 mm above the alar groove, and the lateral nasal artery is damaged bilaterally.