Neer's sign is associated with which type of impingement?

Neer's sign is associated with which type of impingement?

• A. External Impingement
• B. Internal Impingement
• C. Posterior Impingement
• D. Nociplastic Impingement

Answer: (B)

Neer's sign detects subacromial (external) impingement. The test is performed with the arm forward-flexed while the scapula is stabilized; this motion pushes the humeral head upward under the acromion, narrowing the subacromial space. If this reproduces anterior shoulder pain, it points to impingement of the rotator cuff tendons (primarily the supraspinatus) under the acromion, which is the classic subacromial/external impingement pattern. Internal impingement, in contrast, involves contact between the rotator cuff tendons and the posterior glenoid rim and is typically elicited with the arm in abduction and external rotation, often seen in throwers. Nociplastic impingement is not a standard mechanism used to describe this test. In short, Neer's sign is a bedside indicator of external (subacromial) impingement.

Neer's sign detects subacromial (external) impingement. The test is performed with the arm forward-flexed while the scapula is stabilized; this motion pushes the humeral head upward under the acromion, narrowing the subacromial space. If this reproduces anterior shoulder pain, it points to impingement of the rotator cuff tendons (primarily the supraspinatus) under the acromion, which is the classic subacromial/external impingement pattern.

Internal impingement, in contrast, involves contact between the rotator cuff tendons and the posterior glenoid rim and is typically elicited with the arm in abduction and external rotation, often seen in throwers. Nociplastic impingement is not a standard mechanism used to describe this test. In short, Neer's sign is a bedside indicator of external (subacromial) impingement.