The Y view of the shoulder is a lateral radiographic projection of the scapula where the acromion, coracoid process and scapular body form a Y‑shaped silhouette. It assesses humeral head alignment with the glenoid, detects anterior or posterior dislocations, and identifies scapular or proximal humeral fractures—particularly useful in trauma when standard AP views are inconclusive.

Anteroposterior (AP) shoulder radiograph is taken with the patient upright or supine, chest against the image receptor. The central ray is directed perpendicular to the glenohumeral joint, centered about 2.5 cm (1 inch) inferior to the coracoid process. Arm rotation (external, neutral, internal) changes the tubercle profile to assess fractures, joint space, and alignment; additional views may be needed.

The three standard shoulder X‑ray views are: (1) Anteroposterior (AP) view, often obtained in internal and external rotation to assess the glenohumeral joint and humeral head; (2) Axillary view, showing the glenoid–humeral relationship and aiding dislocation detection; (3) Scapular Y (lateral) view, evaluating acromion, coracoid, and humeral head position for fractures or dislocation.

AP (anteroposterior) shoulder view: X‑ray beam enters the front and exits the back; often done supine or upright with the detector behind the shoulder, which can magnify structures and slightly distort clavicle–humeral relationships. PA (posteroanterior) view: beam enters the back and exits the front with the chest against the detector; it reduces magnification and gives a truer clavicle, glenohumeral alignment, and scapular profile.

The scapular Y (Y‑view) radiograph is useful for detecting displaced shoulder fractures and assessing humeral head alignment and dislocation. It helps identify many proximal humerus and scapular injuries but can miss nondisplaced or subtle fractures. If clinical suspicion remains high or X‑rays are inconclusive, further imaging (CT or MRI) is recommended for definitive assessment and surgical planning.

Yes—the scapular Y (Y‑view) is an oblique shoulder X‑ray that effectively demonstrates glenohumeral dislocation by showing the humeral head’s relationship to the glenoid fossa. It can help distinguish anterior from posterior dislocation, especially when an axillary view is not possible. Optimal assessment usually includes AP and axillary (or CT if needed) for confirmation and fracture evaluation.