Shoulder Flashcards
Deltoid: Distal
Deltoid tuberosity of humerus
Deltioid: Proximal
Anterior: Lateral third of the clavicle
Middle: Acromion
Posterior: Spine of Scapula
Deltoid: Innervation
Axillary Nerve ( C5,C6)
Deltoid: Function
Anterior: Flexes and medially rotates arm
Middle: Abducts arm
Posterior: Extends and laterally rotates arm
Supraspinatus: Proximal
Supra spinous fossa of scapula
Supraspinatus: Distal
Superior facet of greater tubercle of humerus
Supraspinatus: Innervation
Suprascapular Nerve ( C4,C5,C6)
Supraspinatus: Function
Initiates and assists deltoid in abduction of arm
Infraspinatus: Proximal
Infraspinous fossa of scapula
Infraspinatus: Distal
middle facet of greater tubercle of humerus
Infraspinatus: Innervation
Suprascapular Nerve ( C5,C6)
Infraspinatus: Function
Laterally rotates arm
Teres Minor : Proximal
Middle part of lateral border of the scapula
Teres Minor: Distal
Inferior facet of greater tubercle of humerus
Teres Minor: Innervation
Axillary Nerve ( C5,C6)
Teres Minor : Function
Laterally rotates arm
Teres Major: Proximal
Posterior surface of inferior angle of scapula
Teres Major: Distal
Medial lip of Intertubercular groove of humerus
Teres Major: Innervation
Subscapular nerve ( C5,C6)
Teres Major : Function
Adducts and medially rotates arm
Subscapularis : Proximal
Subscapular fossa middle part of lateral border of scapula
Subscapularis: Distal
Lesser tubercle of humerus
Subscapularis: Innervation
Subscapular Nerves ( C5,C6,C7)
Subscapularis: Function
Medially rotates arm, Helps hold head of humerus in glenoid cavity
What makes up the rotator cuff?
SITS= Supraspinatus, Infraspinatus, Teres Minor, Subscapularis
Borders of quadrangular space
Space lateral to long head of triceps
Long head of triceps brachii, teres major, teres minor, surgical neck of humerus
Contents: Axillary nerve and posterior circumflex humeral artery
Borders of Triangular Space
Space medial to long head of triceps
Long head of triceps brachii, teres major, teres minor
Contents: Circumflex scapular artery
Motor Innervation: Axillary Nerve ( C6-6)
Deltoid and Teres Minor
Motor Innervation: Suprascapular Nerve
Supraspinatus , Infraspinatus
Motor Innervation: Subscapular Nerve
Teres Major and Subscapularis Muscle
Shoulder Dislocation
Dislocation of the glenohumeral joint : head of humerus driven inferior and anterior ( 95%)
Damage of joint, can damage nerves and frequent damage can cause weak shoulders and ball and socket joint
Shoulder Impingement
Most common shoulder pain
Source is the rotator cuff
The structures involved is tendons,Bursa ,Impigement
Common in older woman, young athletes, and people who do over head lifting