GHJ

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subscapularis innervation

lower and upper subscapular nn

teres major innervation

lower subscapular nn

pectoralis major innervation

medial and lateral pectoral nn

GHJ ABduction muscles

supraspinatus (first 15 degrees) deltoid (after first 15 degrees)

latissimus dorsi innervation

thoracodorsal nn

rotator cuff injuries

inflammation pain tears impingement irritation tendonitis rupture repetitive use can lead to injuries

infraspinatus innervation

suprascapular nn

supraspinatus innervation

suprascapular nn

deltoid innervation

axillary nn

teres minor innervation

axillary nn

GHJ joint type

ball and socket synovial joint with glenoid labrum

GHJ location

between glenoid cavity and head of humerus reinforced by the muscles of rotator cuff

transverse humeral ligament

between greater and lesser tubercles holds biceps long head tendon in place

GHJ ligament type

capsular ligament reinforces and strengthens capsule

GHJ ligaments

coracohumeral ligament glenohumeral ligament transverse humeral ligament coracoacromial ligament

coracohumeral ligament

coracoid to humerus

GHJ external rotation muscles

deltoid infraspinatus teres minor

GHJ internal rotation muscles

deltoid pectoralis major latissimus dorsi teres major subscapularis

GHJ extension muscles

deltoid latissimus dorsi long head triceps brachii

GHJ flexion muscles

deltoid pectoralis major coracobrachialis biceps brachii

coracoacromial ligament

extracapsular ligament coracoid to acromion prevents superior displacement of humeral head

glenoid labrum

fibrocartilaginous ring that acts to deepen the glenoid cavity surrounds glenoid cavity

glenohumeral ligament

glenoid to humerus

GHJ dislocation

most dislocations occur in the inferior direction, but are described clinically as "anterior" or "posterior" dislocations to indicate the position of the humeral head relative to the infraglenoid tubercle of the scapula dislocation can endanger the musculocutaneous nerve and branches of axillary artery

biceps brachii innervation

musculocutaneous nn

coracobrachialis innervation

musculocutaneous nn

GHJ ADduction muscles

pectoralis major latissimus dorsi teres major subscapularis

long head triceps brachii innervation

radial nn


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