outlet impingement
subacromial spurs
Type II and III acromions
osteoarthritic spurs of acromioclavicular joint
thickened or calcified coracoacromial ligament
nonoutlet ligament
loss of rotator cuff...
Stage I
Stage II
Stage III
Character
Events associated
pain shooting down the arm can suggest radiculopathy
weakness
loss of function
prior injections into the shoulder: reaction, scarring, rupture
3 injections per joint per lifetime
Physical Exam
Supraspinatus: abduction
empty can test
Hawkin's test - most sensitive for impingement
Neer's test