Elbow Anatomy Flashcards
Origin: Prox 2/3 of lat supracondylar ridge of humerus
Brachioradialis
Insertion: Radial styloid process
Brachioradialis
Action: Elbow flex & assists pronation/supination against resistance
Brachioradialis
What nerve innervates the brachioradialis?
Radial N
Origin: Short head- Coracoid process
Long head- Supraglenoid tubercle
Biceps Brachii
Insertion: Radial tuberosity & Bicipital aponeurosis
Biceps Brachii
Action: Elbow flex, supination, & GH flex
Biceps Brachii
What nerve innervates the biceps brachii?
Musculocutaneous N
Origin: Dist 1/2 of ant surface of humerus
Brachialis
Insertion: Tuberosity & coronoid process of ulna
Brachialis
Action: Elbow flex
Brachialis
What nerve innervates the brachialis?
Musculocutaneous N
Origin: LH- infraglenoid tubercle of scap
LatH- Post prox 1/2 humerus
MH- post dist 1/2 humerus
Triceps Brachii
Insertion: olecranon process
Triceps Brachii
Action: Elbow ext
LH: GH ext & add
Triceps Brachii
What nerve innervates the triceps brachii?
Radial N
what is the origin of the anconeus?
Lat epicondyle
Insertion: Olecranon process & prox-post surface of ulna
Anconeus
Action: Elbow ext
Anconeus
What nerve innervates the anconeus?
Radial N
Origin: Med-ant surface of dist ulna
Pronator Quadratus
Insertion: lat ant surface of dist radius
Pronator Quadratus
Action: Pronation
Pronator Quadratus
What nerve innervates the pronator quadratus?
Median N
Origin: Lat epicondyle, RCL, annular lig, & supinator crest of ulna
Supinator
Insertion: Ant-lat surface of prox 1/3 of radius
Supinator
Action: Supination
Supinator
What nerve innervates the supinator?
Radial N
Origin: Longus- dist 1/3 of lat supracondylar ridge of humerus
Brevis: Lat epicondyle
Extensor Carpi Radialis
Insertion: Longus- base of 2nd metacarpal
Brevis- base of 3rd metacarpal
Extensor Carpi Radialis
Action: Wrist ext & abd, & assits in elbow flex
Extensor Carpi Radialis
What nerve innervates the Extensor Carpi Radialis?
Radial N
What is the origin of the extensor digitorum?
Lat epicondyle
Insertion: base of dist & middle phalanges 2-5
Extensor Digitorum
Action: MCP & IP ext fingers 2-5
Extensor Digitorum
What nerve innervates the Extensor Digitorum?
Radial N
What is the origin of the extensor carpi ulnaris?
Lat epicondyle
Insertion: Base of 5th metacarpal
extensor carpi ulnaris
Action: wrist ext & add
extensor carpi ulnaris
What nerve innervates the extensor carpi ulnaris?
Radial N
Origin: med epicondyle & coronoid process of ulna
Pronator Teres
Insertion: Mid-lat surface of radius
Pronator teres
Action: pronation & assists in elbow flex
pronator teres
what nerve innervates the pronator teres?
Median N
What is the origin of the flexor carpi radialis?
med epicondyle
Insertion: Base of 2nd & 3rd metacarpals
flexor carpi radialis
Action: wrist flexion & abd, assists in elbow flex
flexor carpi radialis
what nerve innervates the flexor carpi radialis?
Median N
what is the origin of the palmaris longus?
med epicondyle
Insertion: flexor retinaculum & palmar aponeurosis
palmaris longus
Action: tense the palmar fascia, wrist flex, assist in elbow flex
palmaris longus
what nerve innervates the palmaris longus?
median n
Origin: humeral head- med epicondyle
ulnar head- post surface of prox 2/3 ulna
flexor carpi ulnaris
Insertion: pisiform, hook of hamate, & base of 5th metacarpal
flexor carpi ulnaris
Action: wrist flex & add, assists in elbow flex
flexor carpi ulnaris
what nerve innervates the flexor carpi ulnaris?
ulnar n
Origin:
superficialis- med epicondyle, UCL, coronoid process of ulna, interosseous membrance, & prox radius
profundus- ant-med surface of prox 3/4 ulna
Flexor Digitorum
insertion:
superficialis- sides of mid phalanges 2-5
profundus- bases of dist phalanges & palamar surface of fingers 2-5
flexor digitorum
Action:
superficialis- wrist flex & MCP/PIP flex 2-5
profundus- MCP/DIP flex 2-5 & assists in wrist flex
flexor digitorum
what nerve innervates the flexor digitorum?
Median n
what is the exception to nerve innervation of flexor digitorum?
profundus @fingers 3-4 = ulnar n