Labral Tears And Impingement Syndrome Flashcards
Tendons of what muscles insert on the labrum?
RTC muscles and long head of biceps
What part of labrum is affected in SLAP lesion?
Superior Labrum in the Anterior to Posterior direction
What provocative test is used to test labrum?
O’ Brien’s test
Describe O’Brien’s test
Have patient forward flex arm against resistance with thumb down in 15 deg adduction, then repeat with arm supinate. If there is pain with thumb down, but then improves when supinated, this is positive test
Most common cause of shoulder pain
Impingement syndrome
3 stages of subacromial impingement
- Edema
- Tendinitis
- Tear
Location of most common area that RTC tendon tears occur
1 cm from insertion site of supraspinatus tendon, which is the critical zone of hypovascularity
Patients with what type of acromion have higher risk of RTC tears
Type 2 and 3 (curved and hooked)
What phase of swimming stroke does pain occur in someone with RTC impingement?
Catch phase
Most reliable provocative test for impingement
Neer’s test
In painful arc sign, what degrees of abduction do you start getting pain
Between 60 and 120 degrees = pain
When doing the empty can test, why is it important to have arm internally rotated?
It forces the GT under the acromion
4 main things you will see on X-ray in chronic rotator cuff tear
- Superior migration of humeral head
- Flattening of GT
- Subacromial sclerosis and osteophytes
- Wearing of glenoid, coracoid, AC joint, acromion
Gold standard image to look at rotator cuff
MRI
What is shoulder arthrogram good for?
Looking at full thickness RTC tears