Forearm Flashcards
Pronator Teres insertion
Middle 1/3 of lateral radius
Pronator Teres origin
Humeral head: medial epicondyle of the humerus
Ulnar head: coronoid process of ulna
Pronator Teres action
Pronated forearm at radio ulnar joint
Flexor Capri radialis origin
Medial epicondyle of humerus
Flexor Carpi Radialis insertion
Anterior based of metacarpals
Flexor Carpi radialis action
Flexes and radially deviates hand and wrist
Extensor Carpi radialis brevis origin
Lateral epicondyle of humerus
Extensor Carpi Radialis Brevis insertion
Posterior side of base of metacarpal 3
Extensor Carpi radialis brevis action
Extends and radially deviates hand at the wrist
Extensor digitorum Origin
Lateral epicondyle of humerus
Extensor Digitorum insertion
Posterior side of middle and distal phalanges of fingers 2-5
Extensor digitorum action
Extends fingers 2-5 at MCP, PIP, and DIP joints
Extensor digiti minimi origin
Lateral epicondyle of humerus
Extensor digiti minimi insertion
posterior surface of middle and distal phalanges of little finger
Extensor digiti minimi action
Extends little finger at MCP, PIP, DIP
Extender indices origin
Distal 1/3 of posterior ulna
Extender indices insertion
Into tendon of extensor digitorum and thereby onto posterior side of middle and distal phalanges of index finger
Extensor indices action
Extends the index finger at MCP, PIP, DIP joints
Extensor Carpi Ulnaris origin
Lateral epicondyle of humerus
Extensor Carpi Ulnaris insertion
Posterior and ulnar side of base of metacarpal 5
Extensor Carpi ULnaris Action
Extends the and ulnar deviates hand at the wrist
Supinator origin
Lateral epicondyle of humerus
Proximal ulna
Supinator insertion
Lateral, anterior and posterior surface of proximal 1/3 of radius
Supinator action
Supinates forearm
Abductor pollicis longus origin
Middle 1/3 of posterior radius and ulna
Abductor pollicis longus insertion
Lateral side of base of metacarpal 1
Abductor pollicis longus action
Abducts and extends CMC joint of thumb
Extensor pollicis brevis origin
Distal 1/3 of posterior radius ( interosseus membrane)
Extensor pollicis brevis insertion
Postero- lateral base of proximal phalanx of thumb
Distal tendon is radial/ lateral border of snuff box
Extensor pollicis brevis action
Extends thumb at MCP joint; extend and abduct at CMC joint
Extensor pollicis longus origin
Middle 1/3 of posterior ulna
Extensor pollicis longus insertion
Posterior surface of base of distal phalanx of thumb distal tendon is ulnar medial border of snuffbox
Extensor pollicis longus action
Extend thumb at CMC MCP and IP
Flexor digitorum profundus origin
Proximal 1/2 of anterior and medial ulna
Flexor digitorum profundus insertion
Anterior surface of distal phalanges of fingers 2-5
Flexor digitorum profundus action
Flexes fingers 2-5 at MCP PIP and DIP joints
Flexor pollicis longus origin
By proxal tendons to coronoid process of the ulna and medial epicondyle
Flexor pollicis longus insertion
Base of Palmer side of distal phalanx of thumb
Flexor pollicis longus action
Flexes IP joint of thumb; assists flexion of MCP and CMC joints
Pronator quadratus origin
Anterior and medial side of the distal ulnar
Pronator quadratus insertion
Anterior side of distal radius
Pronator quadratus action
Pronated arm
Extensor Carpi radialis longus origins
Distal 1/3 of lateral supracondylar ridge of humerus
Extensor Carpi radialis longus insertion
Posterior side of base of metacarpal 2
Extensor Carpi radialis longus action
extends and radially deviates the hand at the wrist
Palmaris longus ( absent in 15% of population) origin
Medial epicondyle of humerus
Palmaris longus insertion
Palmer aponeurosis and flexor retinaculum of Palm
Palmaris longus action
Flexed hand/ wrist
Flexor Carpi ulnaris origin
Medial epicondyle of humerus
Flexor Carpi Ulnaris insertion
Anterior side of pisiform hook of hamate and base of metacarpal 5
Flexor Carpi Ulnaris action
Flexes and ulnar deviates hand and wrist
Brachioradialis origin
Lateral supracondylar ridge of humerus
distal 1/3 of humerus
Brachioradialis insertion
Lateral side of styloid process of radius
Brachioradialis action
Flexes forearm at elbow
Flexor digitorum superficialis origin
Humeral head: medial epicondyle of humerus
Ulnar head: coronoid process of ulna
Radial head: proximal 1/2 of anterior shaft of radius
Flexor digitorum superficialis insertion
4 tendons; each divides into 2 slips that attach to the sides of the anterior surface of the middle phalange of 2-5
Flexor digitorum superficialis action
Flexes fingers 2-5 at MCP and PIP joints