Fig 1.

(A) The patient is placed in the beach-chair position. The bone references and standard arthroscopic portals in the right shoulder are marked on the skin (A, posterior standard portal, B posterolateral portal, C lateral portal, D anterolateral portal). The 7-o'clock portal is indicated as an accessory portal (arrow). (B) In a frontal view of the right shoulder, the transpectoral portal (M portal) is located 4 to 6 cm medial to the anterior axillary fold, in a vertical line with the nipple. The 2 accessory frontal portals are the anteroinferior portal (J portal) and I portal performed at the tip of the coracoid process, just in front of the origin of the conjoint tendon.