Final answer:
For a perfect scapular Y view, the three anatomical landmarks assessed are the coracoid process, the acromion, and the spine of the scapula, which are critical for accurately evaluating the glenohumeral joint and shoulder region in radiographic images.
Step-by-step explanation:
Anatomical Landmarks for Perfect Scapular Y View
The perfect scapular Y view is a radiographic examination used to assess the scapula's position relative to the humerus and to diagnose shoulder disorders. For a perfect scapular Y view, the three anatomical landmarks evaluated are the coracoid process, the acromion, and the spine of the scapula.
The coracoid process is a hook-like projection toward the lateral end of the superior border of the scapula, which serves as an attachment point for muscles of the anterior chest and arm. The acromion is an expanded region extending laterally from the spinal column of the scapula, forming the bony tip of the superior shoulder region. The spine of the scapula is a prominent ridge on the posterior aspect, providing attachment for neck and back muscles. Correct alignment of these landmarks indicates a well-positioned scapular Y view, which is important to visualize the relationship between the scapula and the humerus, particularly the glenohumeral joint.