Shoulder Anatomy Flashcards
Muscle usually used to test function of axillary nerve
Deltoid
Weakness of this muscle results in lateral scapular winging
Trapezius
Weakness of this muscle results in medial scapular winging
Serratus anterior
Groove between the greater and lesser tuberosity of humerus
Bicipital groove
Anatomic neck fractures are at high risk for?
Osteonecrosis
Muscles that insert into greater tuberosity
Supraspinatus
Infraspinatus
Teres Minor
Muscle that insert into lesser tuberosity
Subscapularis
Bone that serves as the only link from the upper extremity and axial skeleton
Clavicle
Most commonly fractured bone in the body
Clavicle (particularly middle 1/3)
First bone in the body to ossify and last to fuse (early 20s)
Clavicle
Most common type of glenohumeral dislocation
Anterior dislocation (>90%)
Joint with the most range of motion in the body
Shoulder
Muscle weakness elicited in empty can test
Supraspinatus
Muscles that originate and insert in coracoid process
Originate: Biceps (short head), coracobrachialis; Insert: Pectoralis minor
Muscles that insert in proximal humerus
Pectoralis major
Latissimus Dorsi
Teres major
PLT sandwich
Proximal humerus
Innervation of latissimus dorsi
Thoracodorsal nerve
Borders of the triangular space of the shoulder
TTT for Triangular Space
Teres minor
Teres major
Triceps (long head)