When performing a caudal glide of the humeral head on the scapular fossa, which motion of the GH joint is intended to be improved?

The caudal glide of the humeral head specifically targets the improvement of abduction at the glenohumeral (GH) joint. This technique involves applying a downward force to the glenohumeral joint, which facilitates the movement of the humeral head downward in relation to the scapula.

When the humeral head glides caudally (downward), it creates space within the joint capsule and the surrounding structures, allowing for a greater range of motion in abduction. This is particularly important because abduction of the arm requires sufficient movement of the humeral head within the glenoid cavity to enable the arm to lift away from the body.

The improvement in abduction through this technique is vital in rehabilitation and manual therapy settings, especially for individuals who may have restricted shoulder mobility. Understanding this relationship helps practitioners apply manual therapy techniques effectively to enhance joint mobility and function.