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Arthroscopic view from the AI portal in a right shoulder in the beach chair position. The split of the subscapularis is performed with the radiofrequency probe, introduced through the AX portal, from medial to lateral (A), in line with the muscle fibers, until the articular space is reached (B). (AI, anteroinferior; AX, axillary portal; CT, conjoint tendon; HH, humeral head; G, glenoid; SSC, subscapularis.)
