Anterior muscles of forearm

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  1. Pronator teres
    associated nerves/vessels?
    • - CFO and distal part of supracondylar ridge of humerus
    • Deep origin from medial aspect of coronoid process
    • --> maximum convexity of radius at midpoint of lateral axis
    • - Median nerve
    • - Pronates forearm
    • - Median nerve passes between heads, ulnar artery lies deep to both, radial artery passes over point of insertion
  2. Flexor carpi radialis
    • - CFO
    • --> bases of 2nd and 3rd metacarpals
    • - Median nerve
    • - Flexes wrist with FCU, abducts wrist with radial extensors
    • - Stabilises wrist in powerful finger movements
  3. Palmaris longus
    • - CFO
    • --> Palmar aponeurosis, superficial tendon to flexor retinaculum
    • - Median nerve
    • -Tenses palmar fascia, flexes wrist
  4. Flexor carpi ulnaris
    • - CFO, medial margin of olecranon process
    • Aponeurosis attaching to upper 2/3 of subcutaneous border of ulna
    • --> Pisiform, extensions to hook of hamate (pisohamare ligament), base of fifth metacarpal (pisometacarpal ligament), anterior aspect of flexor retinaculum
    • - Ulnar nerve
    • - Adducts and flexes wrist
  5. Flexor digitorum superficialis
    • - Humeral head: anterior aspect of medial epicondyle via CFO
    • Ulnar head: coronoid process of ulna
    • extended origin from radius
    • --> Bases of middle phalanges (decussates)
    • - Median nerve
    • - Flexes fingers (and wrist)
  6. Flexor digitorum profundus
    • - Ulna and adjacent interroseous membrane
    • --> Base of distal phalanges (through decussation)
    • - Radial 1/2: anterior interroseous nerve
    • - Ulnar 1/2: ulnar nerve
    • - Flexes distal interphalangeal joints, also proximal interphalangeal joints, metacarpophalangeal joints, wrist
  7. Flexor hallucis longus
    • - Distal anterior aspect of radius
    • --> Distal phalanx of thumb
    • - Anterior interroseous nerve
    • - Flexes thumb
  8. Pronator quadratus
    • - Anterior surfaces of distal radius and ulna
    • - Anterior interroseous nerve
    • - Pronates forearm

Card Set Information

Author:
 mfawcett
ID:
 125428
Filename:
 Anterior muscles of forearm
Updated:
2011-12-31 12:36:35
Tags:
anterior muscle muscles forearm anatomy
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Description:
Origins, insertions, actions and nerve supply of muscles of the anterior compartment of the forearm.
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