Findings: Anterior Glenohumeral Dislocation

Key Abnormality: Anterior Subcoracoid Dislocation of the Glenohumeral Joint

Associated Injuries to Assess

• Hill-Sachs lesion — posterolateral humeral head compression fracture (impaction against the glenoid rim); look for a vertical dense line/notch on the superolateral humeral head
• Bony Bankart lesion — fracture of the anteroinferior glenoid rim
• Greater tuberosity fracture — occurs in ~15–35% of anterior dislocations, especially in older patients (this patient is 57 — higher risk)

Per Bailey & Love's Surgery, 28th Ed. (p. 522): West Point axillary and Stryker notch views are specifically helpful for evaluating Bankart fractures and Hill-Sachs lesions respectively. CT ± 3D reconstruction is recommended when glenoid bone loss is suspected; MRI for soft-tissue injuries (rotator cuff tear, HAGL, labral pathology).

Clinical Priorities

1. Closed reduction (Cunningham, Milch, or FARES technique) after adequate analgesia/sedation
2. Post-reduction X-ray to confirm relocation and rule out iatrogenic fracture
3. Neurovascular check — axillary nerve injury is the most common nerve complication (test deltoid sensation and strength)
4. Imaging post-reduction — MRI shoulder to assess rotator cuff (cuff tears are common in patients >40 years with first-time dislocation)

Systematic Radiological Analysis — Right Shoulder AP Views

1. 🔴 PRIMARY ABNORMALITY: Anterior Glenohumeral Dislocation

• The humeral head is displaced anteromedially, lying beneath the coracoid process (subcoracoid type — most common, ~65% of all shoulder dislocations)
• The glenoid fossa is empty — no ball-in-socket relationship visible
• The humeral shaft is abducted and externally rotated
• The finger points precisely to the inferiorly and medially displaced humeral head

2. 🔴 CRITICAL ADDITIONAL FINDING: Pseudo-widening / Soft Tissue Opacity at Humeral Neck

Probable fracture-dislocation — the humeral head appears somewhat separated from the shaft, raising concern for a 2-part surgical neck fracture with anterior dislocation

3. 🟡 Hill-Sachs Lesion (Likely)

• A posterolateral humeral head compression defect is suggested by the contour irregularity of the humeral head — the classic impaction fracture from the humeral head striking the anterior glenoid rim during dislocation
• Confirmed only on Stryker notch or axillary lateral view

4. 🟡 Greater Tuberosity — Assess Carefully

• In a 57-year-old, greater tuberosity avulsion fracture occurs in up to 30–40% of anterior dislocations
• The greater tuberosity contour appears mildly irregular on the first image — cannot be fully excluded on AP alone
• May only become apparent post-reduction

5. 🟡 Acromioclavicular (AC) Joint

• The AC joint appears intact with no obvious step deformity or widening

6. 🟡 Visible Chest / Lung Field

• Partially visible right lung field shows no obvious pneumothorax or hemothorax in the visible portions
• Full chest X-ray should be performed if high-energy trauma

Summary Table

Management Implications

1. If isolated dislocation → Closed reduction under sedation + post-reduction X-ray
2. If fracture-dislocation → Do NOT attempt blind closed reduction — risk of displacing fracture fragments; requires orthopedic surgeon, possible open reduction
3. Axillary view / CT scan urgently recommended before reduction to characterize the fracture pattern
4. Post-reduction: MRI to assess rotator cuff (very high rate of cuff tears in patients >40 years)

Note: I cannot directly draw on your uploaded X-ray images, but the reference diagram above illustrates exactly where to look on your films.