what is the name of the shoulder joint
glenohumeral
what is the ring of cartilage on the scapula
glenoid labrum
what does the glenoid labrum do
provides stability of the joint, minimizes the gap between the glenoid fossa and head of humerus
what can cause a glenoid labrum tear
repeated subluxation or dislocation, repetitive movements such as overhead throwing
what are the 3 levels of stability for the shoulder
capsule, GH ligaments, rotator cuff muscles
what are the glenohumeral ligaments
superior, middle, inferior
What are the rotator cuff muscles?
supraspinatus (superior), subscapularis (anterior), infraspinatus (posterior), teres minor (posterior)
actions of the rotator cuff
internal rotation, external rotation, initiates abduction, stabilize the humerus
Latissimus dorsi actions
extension, adduction, retraction, internal rotation, horizontal abduction
what exercises hit lats the most?
rows, pull ups, lat pull downs
movements of the teres major
extension, adduction, retraction, internal rotation (lattisimus jr)
Lats and Teres major share the same ___, where?
insertion, anterior surface (near groove)
primary movements from the coracobrachialis
flexion, adduction, horizontal adduction
what does the anterior portion of the deltoid do
abduction, flexion, internal rotation
what does the posterior portion of the deltoid do
abduction, extension, external rotation
what does the middle portion of the deltoid do
abduction
what does the pectoralis major do
internal rotation, adduction, horizontal adduction, flexion, abduction over 90 degrees
what is a shoulder impingement
soft tissue in subacromial space are pinches by acromion process, coracoacromion ligament, greater tubercle
what structures are involved in a shoulder impingement
coracoacromial ligament, acromion process, greater tubercle, rotator cuff tendons (supraspinatus)
