Which two special tests could potentially provoke snapping over the anterior GH joint in a patient with chronic symptoms?

The selection of Yergason's Test and Speed's Test is insightful in the context of evaluating issues related to the glenohumeral joint, particularly when considering snapping or discomfort in a patient with chronic symptoms.

Yergason's Test is designed to assess the integrity of the biceps tendon within the bicipital groove and can provoke symptoms if there is tendon subluxation or related issues. If the tendon snaps over the anterior aspect of the glenohumeral joint, this test can reproduce that sensation or sound, providing important diagnostic information regarding the state of the tendon and surrounding structures.

Speed's Test similarly focuses on the biceps tendon but evaluates both the biceps tendon pathology and its related discomfort during resisted flexion of the shoulder. If there's underlying irritation or instability in the tendons, this test can reproduce symptoms of snapping or pain, highlighting the dysfunction at the anterior glenohumeral joint.

Both tests, by isolating the biceps mechanism's function and its interaction with the joint structures, are effective in assessing the presence of snapping due to chronic symptoms, making them relevant choices.