Fig 2.

Preoperative pictures of a right shoulder are shown from the back (A) and from the front (B). Arthroscopic portals: standard posterior (P) portal, 1 cm inferior and 1 cm medial to the posterolateral angle of the acromion; anterosuperior (AS) portal, portal placed in the rotator cuff interval; anterolateral (AL) portal, 2 cm lateral to the anterolateral corner of the acromion; anteroinferior (AI) portal 2 cm distal to the tip of the coracoid process, lateral to the conjoint tendon; axillary portal (AX) in the axillary fold; and coracoid portal (C) just above the coracoid process. All portals are lateral to the conjoint tendon.