1how many joints are in the shoulder
4
2how many muscles are in the shoulder
20+
3increased mobility = decreased _________
stability
4what does the shoulder function to protect
protects the brachial plexus
5what are the motions of the scapula
elevation
depression
retraction
protraction
upward rotation
downward rotation
6what are the motions of the shoulder
flexion
extension
internal rotation
external rotation
abduction
adduction
horizontal adduction
horizontal abduction
scaption
circumduction
7what type of motion exists at the acromioclavicular joint
gliding motion (allows scapular motion with shoulder motion)
8what is the role of the acromioclavicular joint in shoulder movement
acts as strut for scapular motion, allows for overhead motion
9how many planes of motion are present at the sternoclavicular joint
3
10what are the clavicular movements at the sternoclavicular joint
protractionetraction
elevation/depression
rotation
11what position is the shoulder in during clavicular elevation
shoulder flexion or abduction
12what position is the shoulder in during clavicular depression
shoulder extension or adduction
13what position is the shoulder in during clavicular protraction
shoulder horizontal adduction
14what position is the shoulder in during clavicular retraction
shoulder horizontal abduction, shoulder extension
15what position is the shoulder in during clavicular posterior rotation
shoulder flexion >90, max 120 shoulder flexion without rotation
16what type of joint is the glenohumeral joint
ball and socket joint
17what are the articulation points of the glenohumeral joint
humeral head and glenoid fossa
18what planes of motion are present at the glenohumeral joint
flexion/extension, abduction/adduction, IR/ER and horizontal Ab/adduction
19is the scapulothoracic joint a true or false joint
false, not a true joint
20what are the articulation points for the scapulothoracic joint
scapula and thoracic wall
21what is teh scapulothoracic joint dependent on
dependent on AC and SC joint motion
22what joint is vital to all glenohumeral motion
scapulothoracic joint
23define scapulohumeral rhythm
correlation of scapular movement with shoulder range of motion
24what is the ratio of scapulohumeral rhythm
ratio 2:1
180 degrees of shoulder flexion = 120 degrees GH and 60 degrees scapula