Fig. 2.

The patient is in an upright, beach-chair position, with the bed set at approximately 70° to 80°. Using sterile technique, the patient’s extremity (right shoulder) is prepped, using a mixture of chlorhexidine gluconate with isopropyl alcohol and draped. Standard portal sites are marked with respect to relevant surface anatomy markings, which include the acromion, clavicle, and coracoid. The posterior portal, which is the primary viewing portal, is made approximately 2 cm inferior and 2 cm medial to the posterolateral border of the acromion. The anterior, working portal is made 1 cm laterally to the coracoid process.