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View of the right shoulder in the semilateral position with a pneumatic arm holder. Markings for portal placement are indicated. Posterior portal (1) located 2 cm inferior to the posterolateral corner of the acromion. Anterosuperior portal (2) located in the rotator interval just anterior to the biceps tendon. Anteroinferior portal (3) is created with an outside-in technique, slightly inferior to the coracoid.
