Active Compression Test is the same as O'Brien's Test and evaluates SLAP lesion or AC joint pathology.

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Multiple Choice

Active Compression Test is the same as O'Brien's Test and evaluates SLAP lesion or AC joint pathology.

Explanation:
Active Compression Test (O'Brien’s test) assesses structures at the top of the glenoid and the AC joint by stressing the shoulder in two positions. The patient resists downward pressure with the arm flexed to about 90 degrees, slightly across the body, and in internal rotation, then repeats with the forearm supinated. The pattern of pain guides the likely issue: if pain occurs in the first position and improves with supination, a SLAP lesion is suggested; if pain is localized to the AC joint during the first position and not reproduced with the second, AC joint pathology is more likely. This test is not aimed at primary rotator cuff tears or impingement, which are evaluated with other tests, though it can help distinguish SLAP/AC joint problems from those other shoulder issues.

Active Compression Test (O'Brien’s test) assesses structures at the top of the glenoid and the AC joint by stressing the shoulder in two positions. The patient resists downward pressure with the arm flexed to about 90 degrees, slightly across the body, and in internal rotation, then repeats with the forearm supinated. The pattern of pain guides the likely issue: if pain occurs in the first position and improves with supination, a SLAP lesion is suggested; if pain is localized to the AC joint during the first position and not reproduced with the second, AC joint pathology is more likely. This test is not aimed at primary rotator cuff tears or impingement, which are evaluated with other tests, though it can help distinguish SLAP/AC joint problems from those other shoulder issues.

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