3 types (areas) of partial cuff tears Ans✓✓✓ Articular, Bursal, intra-
tendinous/substance
3 types AC joint separation Ans✓✓✓ 1: Sprain or incomplete tear of
joint capsule
2: Complete tear of joint capsule and AC ligament. *Coraco-clavicular
ligaments intact*. Widened joint space and clavicle elevated above
acromion
3: tear of: joint capsule, AC ligament, coraco-clavicular ligaments. Jt
space increased 1-1.5cm
AC Jt effusion Ans✓✓✓ Geyser sign w/ open jt space
AC jt impingement Ans✓✓✓ During dynamic imaging AC jt space
closes in internal rotation.
SSx: Crepitus/grinding w/ overhead movement should be eval both AC
and anterior impingement
Anterior Impingement Ans✓✓✓ View in LAX and pt slowly abducts
and elevates arm
*Supraspinatus doesn't slide under acromion* as it should; it may
"snap". Less gap between humerus and acromion. Humeral elevation
above acromion.
, Bankhart lesion Ans✓✓✓ Injury to anterior labrum from recurrent
dislocations
Biceps brachii long head Ans✓✓✓ Origin on glenoid labrum, wrapped
in synovial sheath w/in the inter-tubercular groove
Biceps brachii short head origin Ans✓✓✓ Origin is coracoid process of
scapula. Spared in "popeye" arm
Biceps passes under ____ when side-lying visualization of GH
Ans✓✓✓ Pec major
Biceps tendon sheath runs with Ans✓✓✓ Deltoid fascia. Be certain of
location for injection
Biceps tendon subluxation Ans✓✓✓ Long head out of groove
*medially* caused by external rotation
Calcific bursitis Ans✓✓✓ Occurs after unnoticed strain causing
bursitis. RF include AS, pseudogout
Hyperechoic border w/ liquid center. *No posterior shadowing*