Cubital Fossa and Forearm Flashcards
What ligament holds the head of the radius in place?
Annular ligament
What is ‘pulled elbow’?
Dislocation of elbow joint by sudden pull on extended, pronated forearm
What are the three ligaments of the elbow?
Radial collateral
Ulnar collateral
Annular
List the contents of the cubital fossa.
Really Need Beer To Be At My Nicest Radial Nerve Biceps Tendon Brachial Artery Median Nerve
What happens to the brachial artery at the cubital fossa?
Bifurcates into radial and ulnar arteries
Name the superficial flexor muscles
Pronator teres
Flexor Carpi radialis
Flexor carpi ulnaris
Palmaris longus
Name the intermediate flexor muscle
Flexor digitorum superficialis
Name the deep flexor muscles
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
What is the common origin of the flexors?
Medial epicondyle of humerus
Other than flexion, what actions do FCR and FCU produce?
FCR = Abduction of wrist FCU = Adduction of wrist
What is the innervation of the superficial wrist flexors?
FCU = ulnar nerve
everything else = Median nerve
What is the action of brachioradialis?
Flexion
Returns forearm to mid-prone position from full supination or pronation
What is the nerve supply of brachioradialis?
Radial nerve
Why is brachioradialis unusual?
Flexor but on posterior surface, originates from common extensor origin
Onto which phalanges does flexor digitorum superficialis insert?
Intermediate phalanges of digits II-V
Where does the median nerve lie in relation to flexor digitorum superficialis?
Between the 2 heads
Where do the tendons of flexor digitorum profundus insert?
Distal phalanges, digits II-V
Name the superficial extensors of the forearm
Extensor Carpi Radialis Longus Extensor Carpi Radialis Brevis Extensor Carpi Ulnaris Extensor digitorum Extensor Digiti Minimi
Where is the common extensor origin?
Lateral epicondyle of the humerus
What is the innervation of the superficial extensor muscles?
Radial nerve
What is the function of anconeus?
Abduction of ulna in pronation
Accessory elbow extensor
Name the deep extensor muscles
Extensor Indicis
Extensor Pollicis Brevis
Extensor Pollicis Longus
Abductor Pollicis Longus
What bony elements can be palpated in the floor of the anatomical snuffbox?
Scaphoid
Trapezium
Which artery can be palpated in the snuffbox?
Radial artery
