MRI of the shoulder may be useful to evaluate specific clinical scenarios, including, but not limited to:

1. Prolonged, refractory, or unexplained shoulder pain2. Acute shoulder trauma3. Impingement syndrome: subacromial, subcoracoid, internal4. Glenohumeral instability: chronic, recurrent, subacute, acute dislocation, and subluxation5. Shoulder symptoms in the overhead or throwing athelete6. Mechanical shoulder symptoms: catching, locking, napping, crepitus7. Limited or painful range of motion8. Swelling, enlargement, mass, or atrophy9. Patients for whom diagnostic or therapeutic arthroscopy is planned10. Patients with recurrent, residual, or new symptoms following shoulder surgery

Items to be evaluated(anatomy and pathology).

Articulating bones.Tendons [ supra & infraspinatus,subscapularis and biceps]Ligaments [ gleno-humeral]Bones [ acromion & A/C joint]Labrium.Bursae.Synovial membrane.Fibrous capsule.Muscles.

(47%).

(39%).

(11 %).

(3%).

Tendinopathy of the supra-spinatous tendon.

Infraspinatous tendon tear.

Rare

Young athletes

Seen in all imaging planes

Under surface tear of the infraspinatous (ABER).

Post-traumatic tear of all rotator cuff tendon.

Bursitis is inflammation of a bursa. When injury or inflammation of a bursa around the shoulder joint occurs, shoulder bursitis is present.

Subacromial (subdeltoid) bursitis.

Subacromial (subdeltoid) bursitis.

Prominent subdeltoid bursitis with tendinitis.

Full-thickness tear of the supra-spinatus tendon. Coronal T1 FS image demonstrating contrast spilling out into the subacromial subdeltoid bursa through a defect in the distal supraspinatus tendon.

Subcoracoid-Subscapularis Bursa.

Subscapularis Bursa.

Glenoid Labrum.

Labrium on MR images.•Anterior and posterior labrium (axial)

• Inferior and superior labrium (coronal)

Osseous Bankert.

A large Hill-Sach lesion as seen on a CT arthrogram

Classification…..by Snyder