LAUSR

The axillary arch is a variant slip extending between the latissimus dorsi muscle and the pectoralis major. During educational dissection, a variant muscle was found in left arm of 70-year-old female cadaver. A slip muscle originated from the lateral margin of the latissimus dorsi and crossed the axilla obliquely. Therefore, we defined this muscular variation as axillary arch . It an anterior (superficial) to the medial and lateral cords of the brachial plexus, and then it inserted to coracoid process. We rep orted this variant muscle and discussed its clinical significances.