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ARTHROSCOPY
When establishing portals for shoulder arthroscopy, the standard posterior viewing portal is typically placed:
A2 cm inferior and 1 cm medial to the posterolateral acromion
BJust lateral to the coracoid process
C1 cm lateral to the acromioclavicular joint
DIn the rotator interval
Explanation: The standard posterior portal is the primary viewing portal in shoulder arthroscopy, typically created 2 cm inferior and 1 cm medial to the posterolateral corner of the acromion.