What is the standard protocol for the apprehension test?

What is the standard protocol for the apprehension test?

• A. In standing, shoulder flexed to 30 degrees and internally rotated.
• B. In prone, arm adducted to 0 degrees and externally rotated to 45.
• C. In supine, shoulder abducted to 90 degrees and gradually externally rotated while monitoring facial expression and guarding.
• D. In seated, elbow flexed 90 degrees with anterior pressure on humeral head

Answer: (C)

The main idea is testing for anterior shoulder instability by stressing the anterior capsule and ligaments. In this standard approach, the patient is placed supine with the arm positioned at 90 degrees of abduction and the elbow flexed, then the arm is gradually externally rotated. As the rotation increases, you watch for the patient’s facial expression and any protective guarding or apprehension. A positive response—the patient showing fear, anxiety, or guarding—suggests that the humeral head is translating anteriorly and provoking instability. This position specifically places the humeral head against the anterior glenoid, stressing the structures that prevent anterior dislocation. The other described setups don’t place the shoulder in the same stress pattern on the anterior stabilizers, so they’re used to assess different issues like impingement or other ligamentous tests.

The main idea is testing for anterior shoulder instability by stressing the anterior capsule and ligaments. In this standard approach, the patient is placed supine with the arm positioned at 90 degrees of abduction and the elbow flexed, then the arm is gradually externally rotated. As the rotation increases, you watch for the patient’s facial expression and any protective guarding or apprehension. A positive response—the patient showing fear, anxiety, or guarding—suggests that the humeral head is translating anteriorly and provoking instability. This position specifically places the humeral head against the anterior glenoid, stressing the structures that prevent anterior dislocation. The other described setups don’t place the shoulder in the same stress pattern on the anterior stabilizers, so they’re used to assess different issues like impingement or other ligamentous tests.