Diagnosis
Painful arc of motion between 60–120 degrees is most consistent with this diagnosis
What is subacromial impingement?
Inspection showing atrophy of the infraspinatus suggests pathology in this muscle group.
What is the rotator cuff?
muscle initiates abduction of the arm (first 15 degrees)
supraspinatus
First-line imaging for shoulder pain
Hawkins-Kennedy test evaluates for this condition
subacromial impingement
Patient with night pain, weakness with external rotation, and positive drop-arm test most likely has this diagnosis.
What is a rotator cuff tear?
A squared-off appearance of the shoulder after trauma is classic for this injury.
What is anterior shoulder dislocation?
axillary nerve innervates this muscle
Deltoid
MRI sequence is best to visualize labral tears
MR arthogram
The Speed’s test evaluates pathology of this tendon
Long head biceps tendon
A young athlete with shoulder pain after a seizure or electrical shock—most likely shoulder dislocation type.
What is a posterior shoulder dislocation?
Medial scapular winging indicates weakness of this muscle
What is the serratus anterior
biceps tendon passes through this groove of the humerus
bicipital (intertubercular) groove
X-ray, a "light bulb sign" is associated with what
Posterior Dislocation
The O’Brien’s test (active compression) is most specific for this shoulder injury
SLAP tear
Chronic shoulder pain with stiffness and limited passive range of motion suggests this condition.
What is adhesive capsulitis (frozen shoulder)?
Palpation over this structure reproduces pain in acromioclavicular joint arthritis.
What is the AC joint
This artery runs anterior to the humeral head and may be injured in proximal humerus fractures
anterior humeral circumflex artery
imaging modality that is MOST sensitive for rotator cuff tears
MRI of the shoulder
lift-off test isolates this muscle
subscapularis
This condition presents with shoulder pain, swelling, erythema, and fever—urgent diagnosis to rule out.
septic arthritis
This finding is described as increased sulcus sign with inferior traction on the arm.
multidirectional shoulder instability
This ligament forms the roof of the subacromial space
coracoacromial ligament
Hill-Sachs lesions are best seen on this type of imaging
CT/MRI
60-120