Anterior compartment of forearm - flexor Flashcards
What is the clinical significance of palmaris longus?
It sits above median n. and may be mistaken as the tendon.
What are the muscles of the deep layer in anterior compartment of forearm?
flexor pollicis longus
flexor digitorum profundus
pronator quadratus
What muscles are in the intermediate layer of the ant. compartment of forearm?
Flexor digitorum superficialis
What are the attachments and actions of flexor carpi ulnaris?
Origin: CFO
Insert: pisiform, hamate and 5th metacarpal
Actions: flex and ulnar deviates
What are the attachments and actions of flexor carpi radialis?
Origin: CFO
Insert: 2nd and 3rd metacarpals
Actions: flex + radially deviates at wrist
What are the attachments and actions of flexor digitorum profundus?
origin: Ulna, interosseous membrane
insert: distal phalanges of 4 digits
action: flex MCP and IP joints
Strongest flexor of forearm
How do you test the action of supinator?
elbow flexed at 90 degrees which prevents the involvement of shoulder
What action does the supinator produce?
supinate forearm, also with the help of biceps
What are the attachments and actions of pronator quadratus?
origin: ulna
insert: radius
action: pronates forearm (primary pronator), stabilise wrist joint
Where is the common extensor origin?
lateral epicondyle of humerus
What are the pronators of the forearm?
pronator teres
pronator quadratus
What are the contents of the cubital fossa? (My Bottoms Turned Red)
Median Nerve, brachial artery, tendon of biceps, radial nerve
Where is the common flexor origin?
medial epicondyle of humerus
What are the anterior muscles of forearm - superfical layer (flexors)?
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
PFPF
What are the attachments and actions of pronator teres?
origin: common flexor origin (medial epicondyle of humerus) + medial supracondylar ridge of humerus
insert: midshaft of radius on lateral border
actions: pronate + flex forearm
