Shoulder Flashcards
Deltoid: O
Lateral 1/3 of Clavicle (ant. head), Acromion (mid. head) and Spine of Scapula (post. head)
Deltoid: I
Deltoid Tuberosity of Humerus
Deltoid: N
Axillary nerve (C5-C6)
Deltoid: A
- Flexes and medially rotates arms (anterior part)
- abducts arm (middle part)
- Extends and laterally rotates arm (posterior part)
Teres Major: O
Dorsal surface of inferior angle of scapula
Teres Major: I
Medial lip of Intertubercular Groove of Humerus (bicipital groove)
Teres Major: N
Lower subscapular nerve (C6; C7)
Teres Major: A
Adducts and medially rotates arm (Humerus)
Supraspinatus: O
Supraspinus Fossa of Scapula
Supraspinatus: I
Superior facet of Greater Tubercle of Humerus
Supraspinatus: N
Suprascapular nerve (C4-6)
Supraspinatus: A
- Initiates and assists deltoid in abduction of arm
- holds head of Humerus in Glenoid Cavity
Infraspinatus: O
Infraspinous Fossa of Scapula
Infraspinatus: I
Middle facet of Greater Tubercle of Humerus
Infraspinatus: N
Suprascapular nerve (C5-6)
Infraspinatus: A
- Laterally rotates arm (humerus),
- holds head of Humerus in Glenoid Cavity
Teres Minor: O
Superior part of Lateral Border of Scapula
Teres Minor: I
Inferior facet of Greater Tubercle of Humerus
Teres Minor: N
Axillary Nerve (C5-6)
Teres Minor: A
- Laterally rotates arm
- holds head of Humerus in Glenoid Cavity
Subscapularis: O
Subscapular Fossa of Scapula
Subscapularis: I
Lesser Tubercle of Humerus
Subscapularis: N
Upper and Lower Scapular Nerves (C5-7)
Subscapularis: A
- Medially rotates and adducts arm
- holds head of Humerus in Glenoid Cavity
