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Brachial Plexus Nerve Innervations - Coggle Diagram
Brachial Plexus Nerve Innervations
Lateral Cord
C5-C7
Lateral Pectoral N.
Muscle
Pectoralis Major M.
Fractures
Shortens Clavicle during Clavicle Fracture
Disease
Poland Syndrome (Histo Skin dev) :warning:
Absent Pectoralis Major resulting in absent breast/nipple on one side of body
Pectoralis Minor
????? :red_flag:
Musculocutaneous N.
Muscle
Biceps C5-C6
Coracobrachialis C5-C7
Brachialis (Medial)
Posterior Cord
Subscapular Nerves + Axillary N.
C5-C6
Upper + Lower Subscapular N.
Lower Subscapular Nerve
Muscle
Teres Major M.
Action
Internal Rotation + Adduction
Subscapularis M.
Action
Internal Rotation of Humerus + Adduction
Upper Subscapular N.
Muscle
Subscapularis M.
Internal Rotation of Humerus + Adduction
Axillary N.
Muscle
Deltoid M.
Action
Shoulder Abduction (15+ degrees)
Teres Minor M
Action
External Rotation of Humerus + Adduction
Injuries + Conditions
Fractures
Humerus Surgical Neck
C6-C7
Thoracodorsal N. (Middle Subscapular N.)
Muscle
Latissimus Dorsi M.
C5-T1
Radial Nerve
Muscles
Forearm Extensor muscles
Superficial Layer
Extensor carpi
radialis longus
Extensor carpi
radialis brevis
Extensor
digitorum
Extensor
digiti minimi
Extensor carpi
ulnaris
Anconeus
(also Elbow Extensor)
Deep Layer
Extensor Pollicis
Longus
Extensor Pollicis
Brevis
Extensor
Indicis
Abductor Pollicis
Longus
Supinator
(also Forearm Supinator)
Elbow Flexors
Brachoradialis
Brachialis (lateral)
Elbow Extensors
Triceps Brachii
Anconeus
Forearm Supinator
Supinator :warning:
Brachioradialis
Forearm Pronator
Brachioradialis
Fractures + Injuries
Fractures
Humerus Midshaft (origin of brachialis)
Wrist Drop/Saturday Night Palsy
Muscle affected (Triceps)
Potential Sites of Injury
Spiral Groove Injury
Location: Profunda Brachii Artery)
Radial Tunnel
Location: Anterior Side of Elbow
Posterior Interosseous Nerve
Location: Passing through the supinator muscle
Superficial Branch of Elbow
Location: By Lipoma
Lateral Epicondylitis
Tennis Elbow
Muscles Affected Forearm Extensors
Extensor Carpi Radialis
Longus and Berevis
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
Medial Cord
C8-T1
Medial Pectoral Nerve
Muscle
Pectoralis Minor
Pectoralis Major
C8
Medial Brachial Cutaneous N.
Medial Antebrachial Cutaneous N.
C7
Ulnar N.
Muscles
Forearm
Medial 1/2 of Flexor Digitorum Profundus (Forearm) Digit 4&5
Flexor Carpi Ulnaris
Hand
3 Palmer Interossei (Adduct) PAD
3 Hypothenar Muscles (Flexor, Opponens, Abductor) DAB
Adductor Pollicis
Palmaris Brevis
Metacarpophalangeal Joints (MCP)
Interphalangeal Joints (IP)
Injuries + Conditions
Fractures
Medial Epicondyle
Cubital Tunnel Syndrome/Claw Hand
Injuries
Additional site of Injuries
Behind the Medial Malleolus at Elbow
At Hook of the Hamate
Lateral + Medial Cord
C5-C8
Median N.
Muscles
Forearm Flexors
Except Flexor Carpi Ulnaris and 1/2 of Flexor Digitorum Profundus (Ulnar nerve does this)
Flexor Digitorum Superficialis
Lateral 1/2 of Flexor Digitorum Profundus (Digit 1&2)
Flexor Capri Radialis
Palmaris Longus
Pronator Teres
Pronator Quadratus
Hand
2 Lumbrical to Digit 2&3
3 Thenars
Flexor Pollicis Brevis
Abductor Pollicis Brevis
Oppones Pollicis
Injuries + Conditions
Fractures
Supracondylar Region
Injuries
Hand of Benediction/Pope's Hand
Muscle Paralyzed
Thenar M.
Ape Hand Deformity
Muscle Paralyzed
Thenar M.
Additional site of injuries
Medial Nerve Passing through Pronator Teres
Carpal Tunnel
Trunks + Roots
Trunks
Superior Trunk (C5-C6)
Suprascapular Nerve
Muscles
Supraspinatus
Injury
Rotator Cuff Tear
Erb's Palsy
Paralysis of Deltoid and Supraspinatus
Action
Shoulder Abduction 0-15 degrees
Infraspinatus
Action
External Rotation of Humerus
Subclavius
Subclavius Muscle
Roots
C5
Phrenic Nerve
Dorsal Scapular Nerve
Muscles
Rhomboid Major
Rhomboid Minor
Levator Scapulae
C5-C6
Longus Colli/Scalene Muscles Nerve
C5-C7
Long Thoracic Nerve
Serratus Anterior
Injury
Winged Scapula
T1
First Intercostal Nerve