Upper Extremity Anatomy Flashcards
Supraspinatus
O: Supraspinous Fossa of Scapula Ins: Greater Tubercle of Humerus Inn: Suprascapular Nerve (C5-6)
Infraspinatus
O: Infraspinous Process of Scapula Ins: Greater Tubercle of Humerus Inn: Suprascapular Nerve (C5-6)
Teres Minor
O: Lateral Upper 2/3 of Scapula Ins: Greater Tubercle of Humerus Inn: Axillary Nerve
Subscapularis
O: Subscapular Fossa of Scapula Ins: Lesser Tubercle of Humerus Inn: Subscapular Nerve (C5-6)
Teres Major
O: Lower 1/3 of Lateral Scapula Ins: Lesser Tubercle of the Humerus Inn: Subscapular Nerve (C5-6)
Biceps Brachii Long Head
O: Supraglenoid tubercle of the scapula Ins: Radial Tuberosity Inn: Musculocutaneous Nerve (C5, 6, 7)
Biceps Brachii Short Head
O: Coracoid Process of the Scapula Ins: Radial Tuberosity Inn: Musculocutaneous Nerve (C5, 6, 7)
Triceps (Long Head)
O: Infraglenoid Tubercle of Scapula Ins: Olecranon Process of Ulna via triceps tendon Inn: Radial Nerve (C6-8)
Pronator Teres
O: Medial Epicondyle of Humerus/Common Flexor Tendon/Coronoid Process of Ulna Ins: Lateral radius, distal to supinator insertion Inn: Median Nerve (C6-7)
Supinator
O: Lateral Epicondyle of Humerus, radial collateral ligament, and annular ligament of the radius Ins: Lateral 1/3 of proximal radius Inn: Deep Branch of Radial Nerve (C6-7)
Flexor Digitorum Superficialis
O: Humeroulnar Head, Medial Epicondyle of Humerus, Radial Head, Middle 1/3 of Radius. Ins: Shafts of Middle Phalanges 2-5 Inn: Median Nerve (C8-T1)
Flexor Digitorum Profundus
O: Posterior and medial borders of ulna Ins: Base and palmar surface of distal phalanges of digits 2-5 Inn: Median Nerve and Ulnar Nerve (C8-T1)
Flexor Pollicis Longus
O: Interosseous Membrane and anterior surface of radius Ins: Palmar side of distal phalanx of first digit Inn: Anterior Interosseous Nerve, branch of Median Nerve (C8-T1)
Extensor Carpi Radialis Longus and Brevis
O: humerus at the anterior of lateral epicondyle (common extensor tendon) I: Posterior base of the 3rd metacarpal Nerve: deep branch of the radial nerve
Flexor Pollicis Brevis (Superficial and Deep)
O: Superficial- Flexor Retinaculum Deep- Capitate and Trapezium Bones Ins: Base of Proximal Phalanx of the 1st digit Inn: Recurrent Branch of Median Nerve
Adductor Pollicis
O: Capitate, 2nd and 3rd metacarpals (oblique), 3rd metacarpal (transverse) Ins: Proximal phalanx (oblique and transverse) Inn: Ulnar (C8-T1)
Abductor Pollicis Brevis
O: Navicular and trapezium Ins: Base of proximal phalanx Inn: Median (SO IS THE Flexor Pollicis and Opponens Pollicis)
Ape Hand forms due to Median Nerve Palsy
Extensor Pollicis Longus
Posterior surface of ulna; interosseous membrane; I: Distal phalanx I Inn:Posterior interosseous nerve
Lumbricals
O: Tendons of flexor digitorum profundus Ins: Radial side of extensor expansion of extensor digitorum Inn: Lateral two, median; medial two, ulnar
Dorsal/Palmar Interossei
O: Dorsal- The medial side of the proximal end of the 1-4 metacarpal and lateral side of the 2-5 metacarpal…Palmar- medial surface of the base of the metacarpal Ins: Dorsal- Lateral side of the base of the 2-5…Palmar- proximal phalanx and the extensor expansion Inn: deep branch of the ulnar nerve (C8, T1)
Serratus Anterior
O: Ribs 1-8 Ins: Ventral surfaces of the superior and inferior angles and vertebral (medial) border of scapula Inn: Long Thoracic Nerve
Levator Scapulae
O: Transverse Processes of C1-4 Ins: Superior angle of medial border of scapula Inn: 3rd and 4th cervical spinal nerves
Rhomboids
O: Spinous process of C7-T5 Ins: Medial Border of Scapula Inn: Dorsal Scapular
Low Trap
O: Spinous Process of T5-12 Ins: Spinous Process of Scapula Inn: CN 11, Spinal Accessory Nerve
