Musk: UE Flashcards
what rotator cuff is the most common involved in an injury
supraspinatus
which rotator cuff muscle provides internal rotation
subscapularis
which rotator cuff muscles provide external rotation
infraspinatus, teres minor
which rotator cuff muscle provides abduction
supraspinatus
clinical presentation
- pain over anterior and lateral aspects of shoulder
- radiates to deltoid
- occurs initially with overhead activity and then progresses to sx at rest
-
ROM decreased
- inability to abduct arm above shoulder level
Rotator cuff injury
tendonosis
chronic degeneration of the muscles typically with age
tendonitis
inflammation associated with repetitive trauma associated with everyday movement of the shoulder
what can cause chronic rotator cuff tears
- degeneration
- impingement
- overload
*usually seen in people with overhead occupations
an acute rotator cuff tear is often seen with what pathology
labral pathology

clinical presentation
- pain comes on gradually
- c/o deep ache in lateral shoulder that radiates to deltoid
- point tenderness
- ROM painful >90 degrees
tendonitis; impingement
what special testing can you do to check for impingement
- Neer’s (pictured): subacromial impingement
- Hawkin’s: supraspinatous tendon impingement

what is a major risk factor for impingement
repetitive overhead activity
chronic rotator cuff tears are most often seen in what patient population
men older than 40 years
clinical presentation
- pain usually worse at night and interferes with sleep
- worsening pain followed by gradual weakness, weakness does not improve with analgesics
- decrease in ability to move the arm, especially abduction
chronic rotator cuff tear
what tests can you do to check for rotator cuff tear
- empty can: supraspinatous tear
- drop arm: complete rotator cuff tear
what is the lidocaine injection test
- distinguishes between tendinopathy and tear
- 10mL of lidocaine is injected in the subacromial space
elevation of humeral head over 1 cm is highly suggestive of what condition
rotator cuff tear
what is the study of choice when a full thickness tear is suspected or patient has failed conservative treatment
MRI
*MR arthrography preferred (inject contrast into joint)
what are the three main goals when treating a rotator cuff tear
- recover lost strength
- improve global shoulder function
- treat concurrent tenonitis
acute therapy after rotator cuff tear
- ice - anterolaterally over deltoid
- NSAIDs
- weighted pendulum stretching for 5 min, BID
- restrict overhead positioning, reaching, and lifting
- shoulder immobilizer for short duration
- consider PT
if rotator cuff tear symptoms are persistant, what is the next treatment you can try? how often can you use this?
- subacromial steroid injection
- no more than 3-4 injections per year
what is the final treatment option for patients with persistant rotator cuff symptoms
surgery
- arthroscopic repair
- joint replacement
what is the principle cause of rotator cuff tendonitis
shoulder impingement syndrome
clinical presentation
- subacromial tenderness
- normal glenohumeral joint ROM
- pain > 90 deg
- preserved strength
impingement
*presentation is nearly identical to rotator cuff tendonitis








