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where is the flexor region anatomically?
Anterior compartment of the forearm
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Where is the extensor region anatomically?
The posterior compartment of the forearm
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What are the muscles of the anterior forearm
- Pronator Teres
- Flexor carpi radialis
- Palmaris Longus
- Flexor Carpi ulnaris
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Pronator Teres
- has 2 heads: long humeral and short ulnar
- -attachments:Medial Supracondylar ridge of the humerus (common flexor tendon), coronoid process, and anterolateral radius
- - Pronates arm at radioulnar joint
- -median nerve
- - ulnar artery, inferior ulnar collateral, anterior ulnar recurrent, and radial artery
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Flexor Carpi Ulnaris
- -common flexor tendon, medial epidondyle , plamar aspect of 2nd and 3rd metacarpal
- -Flexes and abduct at radiocarpal(wrist) joint
- -median nerve
- -radial artery and ulnar recurrent artery
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Palmar Longnus
- -medial epi. common flex. tendon, palmar aponeurosis, and flexor retinaculum of hand
- - flex hand at wrist and stablize hand aponeurosis
- -median nerve
- - median artery and anterior branch of ulnar recurrent artery
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Flexor Carpi Radialis
- Medial epicondyle of the humerus via the common flexor tendon, palmar aspect of the base of the 2nd and 3rd metcarpal
- - flexes the hand and the radiocarpal joint (wrist) abduct the hand at the radiocarpal and midcarpal joint
- -median nerve
- radial nerve and the posterior ulnar recurrent
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What is the special feature of the common flexor tendon
It is the tendon for all 5 superficial muscles of the anterior arm
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What muscles attach to the medial epicondyle of the humerus?
- flexor carpi radialis
- palmor longus
- flexor carpi ulnaris
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Flexor digitorum superficialis
- medial epicondyle of the humerus ( common flexor tendon), sublime tuberucle of the ulna, and proxmial anteriro half of the border of the radius; palmar side of the middle phalanges
- - flexes index, middle, ring and pinky fingers
- -median nerve
- -anterior ulnar recurrent artery, ulnar and radial artery
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Flexor digiturum profundus
- deep to the flexor d. superficialis
- - insert on the coronoid process , anterior and medial surface of the ulnar; base of the distal all phalanges except the 1st digit (palmar side)
- - median nerve and anterior interosseous part of the median nerve
- -ulnar artery, inferior ulnar collateral, ulnar recurrent, and anterior interosseous arteries
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Pronator Quadratus
- -distal 1/4 of ulnar and radius
- -pronates forearm at radioulnar joints
- -anterior antebrachial interosseous nerve
- -anterior antebrachial interosseous artery
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Fexor Policis Longus
- The THUMB!!!
- -radius and interossesous memebrane of the forearm; base of distal pahalanx of digit 1
- -flexes thumb
- -anterior antebrachial interosseous nerve
- -ant. antebrach. inteross. artery and radial artery
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