Shoulder Flashcards
What type of acromion are you most likely to see impingement with?
Type III
The _______ _____ = inferior part of the capsule that allows you to bring your arm into elevation
dependent fold
GHJ concavity compression phenomenon = ______ effect
suction
There is ________ intra-articular pressure in the GHJ
negative
The capsule controls ______ of the humeral head on the glenoid fossa
translation
What 3 movements tighten the posterior capsule?
- flexion
- adduction
- IR
What 3 movements tighten the anterior capsule?
- extension
- abduction
- external rotation
What direction do fibers of the GHJ run in?
Every direction
The capsule attaches to the _____ in the back and the ______ at the front
glenoid; humerus
What are 3 structures at risk of impingement below the acromion?
- long head of biceps
- supraspinatus
- subacromial bursa
The RC provides a ____ force for the humerus.
shunt
The force of the RC has a slightly _______ vector, whereas the posterior cuff has a slightly _______ vector
downward; upward
If you want to increase subacromial space, strengthen what 3 muscles/groups?
- SA
- Trapezius
- RC
If the RC is weak, we might see _______ translation of the humeral head.
upward
Ideal shoulder function = humerus is centred in the _______
glenoid
With shoulder pain, what are the 2 main presentations?
- stiff shoulder
2. the hyper mobile
What are 4 possible causes of stiff shoulder?
- habitual postures
- muscle imbalance
- post traumatic
- post surgical
Stiff shoulder may result in biomechanical compensation at other joints. Name 3
- neck
- elbow
- wrist
The pattern of loss of ROM will depend on what?
whether all or some of the capsule is tight
Is global or regional capsular tightness more common?
regional
Anteriorsuperior capsule _____ the humeral head anterosuperiorly
pulls
ALL portions of the capsule besides the anterior superior portion _____ the humeral head away from the tight area
push
What movements will you lose with anterosuperior capsule tightness?
ER and end range abd
With anterosuperior capsule tightness, impingement will occur in _______ _____/____
horizontal add/IR