Cubital fossa and anterior forearm Flashcards
What vein runs laterally to the cubital fossa
the cephalic vein
What vein runs medially to the cubital fossa
the basilic vein
Which vein connects the basilic and cephalic vein
the median cubital vein
Which nerve runs laterally to the cubital fossa
the lateral cutaneous nerve of the forearm
What are the boundaries of the cubital fossa:
- roof
- medial
- lateral
roof = fascia between the lateral and medial epicondyle
medial = pronator teres
lateral = brachioradialis
Which artery bifurcates in the cubital fossa and what does it bifurcate into
the brachial artery - into the radial and ulnar
What are the main arteries and nerves found in the cubital fossa
median nerve, ulnar artery, radial artery, radial nerve,
Where does the ulnar nerve run in regards to the cubital fossa
the ulnar nerve does not enter the cubital fossa, it runs posterior to the medial epicondyle instead
State the origin, insertion, innervation and role of pronator teres
origin = humoral head (medial epicondyle) and ulnar head (coronoid process of ulna)
insertion =midshaft of radius at the pronator tuberosity
innervation = median nerve, C6,7
role = pronation
State the origin, insertion, innervation and role of flexor carpi radialis
origin = medial epicondyle of humerus
insertion = 2nd and 3rd metacarpals
innervation = median nerve C6,7
role = flexes and abducts the wrist
State the origin, insertion, innervation and role of flexor carpi ulnaris
origin = medial epicondyle of humerus
insertion = pisiform carpal bone
innervation = ulnar nerve C7,8,T1
role = flexes and adducts the wrists
State the origin, insertion, innervation and role of palmarus longus
origin = medial epicondyle of humerus
inserts = palmar aponeaurosis of the hand
innervation = median nerve C7,8
role = flexor of the wrist
State the origin, insertion, innervation and role of the flexor digitorum superficialis muscle
origin = humer-ulnar head (medial epicondyle and coronoid process of ulna) and the proximal anterior 1/2 of the border of the radius
insertion = middle phalanges of 4 fingers
innervation = median nerve C8,T1
role = flexes proximal inter phalangeal joints of digits (PIP)
State the origin, insertion, innervation and role of flexor pollicis longus
origin = anterior surface of radius and radial 1/2 of interosseaous membrane
inserts = palmar surface of base of distal phalanx of the thumb
innervated = median nerve C7,8
role = flex ion of the thumb
State the origin, insertion, innervation and role of the flexor digitorum profundus
origin = anterior and medial surface of ulnar + anterior and medial 1/2 of interosseous membrane
inserts = distal phalanges of 4 digits
innervated = median nerve innervated the lateral 1/2, ulnar nerve innervated the medial 1/2
role = flexing distal interphalangeal joints of the fingers
State the origin, insertion, innervation and role of the pronator quadratus muscle
origin = distal 1/4 of the ulnar
insertion = distal 1/4 of the radius
innervation = median nerve
role = pronation
What is the lateral inter muscular septum?
Pass from anterior border of radius to deep fascia surrounding the limb
What is the interosseous membrane?
Links adjacent borders of radius and ulnaris and attachment of deep fascia surrounding along posterior border
- Has an an aperture for interosseous artery
What are the key features of radius?
Radial tuberosity
Oblique line
A roughening for attachment of pronator teres
Articular facet for Lunate bone
Articular facet for scaphoid bone
Ulnar notch
Skinny proximal
Fatter distal
What are the key features of the ulnar?
Orelcon
Coronoid process
Radial notch
Tuberosity of ulnar
Styloid process
Attachment for Articular disc
Roughening for attachment of quadratus pronator
Tophacter notch
What extension is on the clavicle?
Conoid process
Which muscles of the anterior forearm are in the superficial and deep groups
superficial = pronator teres, flexor carpi radialis/ulnaris, palmarus longus and flexor digitorum superficialis
deep = flexor digitorum profundus, flexor pollicis longus and pronator quadratus
A superficialis vein, runs in the roof of the cubital fossa. This is a common site for venepuncture. What is the name of this vein?
Median cubital vein
