Shoulder and UE Injuries Flashcards
(88 cards)
What artery supplies the proximal humerus w/ blood?
Axillary Artery
What are the 2 branches of the axillary artery?
Ant humeral circumflex artery
Pos humeral circumflex artery
Muscles of the Rotator Cuff
Supraspinatus
Infraspinatus
Subscapularis
Teres Minor
Function of supraspinatus
Abduction
Superior stabilizer of the shoulder
Function of Infraspinatus
External rotation
Function of Teres Minor
External rotation in 90deg of abduction
Function of subscapularis
Internal rotation
MOI of Clavicle fx
Fall w/ arm adducted
Sports injury during football, ice hockey
Clavicle fx presentation
Pain w/ active/passive ROM esp abduction/flexion of shoulder
How do you tx clavicle fx?
- SLING
- Start w/ glenohumeral ROM within 1wk
- Conservative tx if non or minimally dispalced (sling, ice NSAIDS, analgesics, passive ROM)
-Displaced –> ORIF w/ plate & screws, sling, ROM, analgesics, PT
MOI of AC joint injury?
- Direct force to lateral aspect of shoulder w/ arm ADDUCTED
- Acromion driven INFERIORLY & MEDIALLY w/ respect to clavicle
- Common in young athletic ppl (hockey)
During an AC joint injury, in what direction does the acromion move in respect to the clavicle?
INFERIORLY & MEDIALLY
AC joint injury presentation
- pain in affected shoulder
- decrease ROM
- TTP over AC joint
- Visible deformity
What test can you do to diagnosis AC joint injury?
A. Empty can test
B. Cross arm test
C. Hawkin Impingement test
D. Phalen test
CROSS ARM TEST
-pt elevated affected arm 90deg, then actively adducts it
pos = pain in ac joint
Grade I AC joint injury
Sprain on AC ligament
Grade II AC joint injury
Tear of AC ligament
Grade III AC joint injury
Tear of AC ligament & coracoclavicular ligament
How would you tx a grade I and II AC joint injury?
Conseravatively
How would tx a grade III + AC joint injury?
Surgery
MOI of AC joint dislocation
- tackled during football
- grade III AC joint injury –> increase CC distance & superior displacement of distal clavicle
Sternoclavicular Joint Dislocation MOI
Uncommon
Fall on ABDUCTED and EXTENDED arm
*may not dislocate till days after injury
Would you be more worried with a posterior or anterior dislocation of the sternoclavicular joint? Why?
Posterior dislocation; worried about neuro structures
If a pt has a fx in the diaphysis of the humerus, what neurovascular structure are you worried about?
Radial Nerve
Proximal humerus fx presentation
- Mod-severe shoulder pain that increase w/ shoulder movement
- swelling & ecchymosis
- pt holds ADDUCTED arm against side
- neurovascular injury more likely to occur in displaced fx or fx-dislocation (involve axillary or suprascapular n)