Upper Extremity and Lower Extremity Nerves

Axillary Nerve

Root: C5-6 posterior cord

Innervates: Deltoids, Teres Minor

Posterior Cord

Sensory: lower half of deltoid + upper half of biceps

Injury: Dislocation or Humerus Fracture

Radial Nerve

Roots: C5-8, T1 Posterior Cord

Innervates: Triceps, Anconeus, Brachioradialis, Extensor Digitorum Extensor Indicis, Extensor Carpi Radialis longus and brevis, Abductor Pollicis Longus, Extensor Carpi Ulnaris, Extensor Pollicis Brevis and Longus, Extensor Digit Minimi

Sensory: Lateral Dorsum of the hand, skin of the lower half of lateral side of arm

Injury: wrist drop, or radial tunnel syndrome, distal to lateral epicondyle

Ulnar Nerve

Roots

C7-T1 Medial Cord

Innervates

Dorsal and Palmar Interossei, Opponens Digiti Minimi, Flexor Carpi Ulnaris, Flexor Digiti Minimi, Abductor Digiti Minimi, Adductor Pollicis, Lumbricals, Flexor Pollicis Brevis Deep, Flexor Digitorum Profundus Medial Half

Sensory: Medial ½ of palm,

Injury: Cubital Tunnel Syndrome, Claw Hand, Guyons, cannot grip paper

Median Nerve

Roots: C5-8, T1 Medial and Lateral Cord
Innervates: Flexor Carpi Radialis, Pronator Quadratus, Flexor Carpi Digitorum Superficialis, Pronator Teres, Palmaris Longus, Flexor Pollicis Brevis and Longus, Abductor Pollicis Brevis, Lumbricals 1, 2

Sensory: Palm lateral 2/3, 1, 2 3rd finger

Injuries: Pronator Teres Syndrome, Carpal Tunnel (stuck under the flexor retinaculum) ape hand deformity

Musculocutaneous Nerve

Roots: C5-7 Lateral Cord

Innervates: Biceps Brachia, Brachialis, Coracobrachialis

Sensory: Lateral Cutaneous forearm

Suprascapular Nerve

Nerve Root: C5-6

Innervates: Infraspinatus, Supraspinatus

Subscapular Nerve

Nerve Roots C5-6 Posterior

Innervates: Teres Major, Subscapularis,

Lateral Pectoral Nerve

Never Roots C5-C7

Innervates: Pectoralis Major

Medial Pectoral Nerve

Nerve Roots: C8-T1

Innervates: Pec Minor

Long Thoracic Nerve

Nerve Roots: C5,6,7

Innervates Serratus Anterior

Thoracodorsal Nerve

Nerve Roots: C6-C8

Innervates: latissimus Dorsi

Dorsal Scapular Nerve

Roots: C5

Innervates: Rhomboids Major and Minor, Levator Scapula

Nerve to Subclavius

Nerve Roots: C5-C6

Innervates Subclavius

Spinal Accessory Nerve

Roots: 11

Innervates: Trapezius, Sternocleidomastoid

Superior Gluteal Nerve

Roots: L4-S1

Innervates: Glute Med + Min + TFL

Inferior Gluteal Nerve

Roots: L5-S2

Innervates Glute Max

Nerve to Piriformis

Root: L5-S2

Innervates: Piriformis

Obturator Nerve

Roots: L2-L4

Innervates: Obturator Externus, Gracilis, Adductor Brevis, Longus, Magnus

Quadratus Femoris

Roots: L4-S1

Innervates Quadratus Femoris, Gemellus Inferior

Obturator Internus

Roots: L5-S2

Inenrvates Gemellus Superior, Obturator Internus

Sciatic Nerve

Roots:L4-S3

Innervates: Biceps Femoris, Semitendinosus, Semimembranosus, Adductor Magnus

Femoral Nerve

Roots: L2-L4

Innervates: Rec Fem, Vastus Medialis, Lateralis, Intermedius, Sartorius, Pectineus, Iliacus

TIbial Nerve

Root: L4-S3

Innervates: Gastrocs, Soleus, Plantaris, Popliteus, Flexor Hallucis Longus, Flexor Digitorum Longus, Tibialis Posterior

Injury: Tarsal Tunnel Syndrome, Renaticulu,

Medial Plantar Nerve- From Tibial

Innervates: Abductor Hallicus, Flexor Hallicus Brevis, Flexor Digitorium Brevis, Lumbrical 1

Lateral Plantar Nerve

Adductor Hallucis, Plantar and Dorsal Interossei, Lumbricals, Abductor Digiti Minimi, Quadratus Plantae

Common Peroneal Nerve

Roots: L4-S2

Deep Peroneal Nerve

Roots: L4-S1

Innervates: Tibilalis Anterior, Extensor Digitorium Brevis + Longus, Peronius Tertius, Extensor Hallucis Longus

Injury: Foot Drop and unopposed eversion

Superficial Peroneal Nerve

Roots: L4-S2

Innervatees: Peroneus Longus and Brevis