Shoulder pathology

Question 1

What is an AC dislocation and how does it appear?

Answer 1

Acromioclavicular (ah-kro″-mi-o-klah-vik′-u-lar) (AC) dislocation refers to an injury in which the distal clavicle usually is displaced superiorly.
This injury most commonly is caused by a fall.

Appears as Widening of AC joint space

Question 2

What is a Bankart lesion and how does it appear?

Answer 2

Bankart lesion is an injury of the anteroinferior aspect of the glenoid labrum. This type of injury often is caused by anterior dislocation of the proximal humerus.

Possible small avulsion fracture of
anteroinferior aspect of glenoid rim

Question 3

What is osteoarthritis and how does it appear?

Answer 3

Osteoarthritis = degenerative joint disease (DJD), a non inflammatory joint disease characterized by gradual deterioration of the articular cartilage with hypertrophic bone formation.

Narrowing of joint space

Question 4

What is a shoulder dislocation and how does it appear?

Answer 4

Shoulder dislocation occurs as traumatic removal of humeral head from the glenoid cavity. Of shoulder dislocations, 95% are anterior, in which the humeral head is projected anterior to the glenoid cavity

Separation between humeral head and glenoid cavity

Question 5

What is Tendonitis and how does it appear?

Answer 5

Tendonitis (ten″-deni′-tis) is an inflammatory condition of the tendon that usually results from a strain.

Calcified tendons

Question 6

What is a Hill-Sachs defect and how does it appear?

Answer 6

Hill-Sachs defect is a compression fracture of the articular surface of the posterolateral aspect of the humeral head that often is associated with an anterior dislocation of the humeral head.

Compression fracture and possible
anterior dislocation of humeral head