Arthrogram Shoulder

Overview

Shoulder arthrography injects contrast into the glenohumeral joint under imaging guidance to evaluate labral tears and rotator cuff pathology. Fluoroscopic or ultrasound guidance ensures accurate intra articular placement. Arthrography is often combined with MRI for enhanced soft tissue visualization.

Technique

Perform sterile joint injection under fluoroscopic or ultrasound guidance and confirm intra articular contrast distribution. Use appropriate contrast type and volume for the planned imaging study. Monitor the patient for immediate adverse reactions.

Clinical Indications

Arthrogram is indicated for suspected labral tear adhesive capsulitis and occult rotator cuff pathology. It enhances detection of intra articular abnormalities when MRI alone is inconclusive. Post procedure MRI or CT arthrography provides detailed assessment.

Image Assessment

Evaluate contrast filling defects labral detachment and capsular irregularity. Assess for contrast extravasation indicating capsular rupture. Report findings to guide surgical planning and arthroscopic intervention.

Shoulder AP with Weights

Overview

AP shoulder views with weights in the hands accentuate inferior subluxation and rotator cuff arthropathy. The patient stands holding light weights to apply gentle traction. Comparison with non weighted views highlights dynamic changes.

Technique

Obtain standard AP shoulder radiographs with the patient holding equal weights in both hands. Ensure consistent exposure and positioning between weighted and non weighted views. Use caution in painful or unstable shoulders.

Clinical Indications

Weighted views are indicated for suspected chronic rotator cuff tear and inferior subluxation. They help demonstrate humeral head migration under load. MRI provides soft tissue detail when indicated.

Image Assessment

Compare humeral head position relative to the glenoid with and without weights. Assess for superior migration and joint space narrowing. Report findings relevant to surgical planning and rehabilitation.