POSTERIOR COMPARTMENT
SUPERFICIAL
| Muscle | Origin | Insertion | Artery | Nerve | Action | Antagonist | |
|---|---|---|---|---|---|---|---|
| extensor digitorum | अंगुलि प्रसारिणी | lateral epicondyle of humerus (common extensor tendon) | 2nd–5th phalanges | posterior interosseous artery | posterior interosseous nerve (C7, C8) | extends hand, extends fingers | flexor digitorum superficialis, flexor digitorum profundus |
| extensor digiti minimi | कनिष्ठिका प्रसारिणी | anterior surface of lateral epicondyle of humerus (common extensor tendon) | extensor expansion, located at base of proximal phalanx on dorsal side | extends little finger at all joints | flexor digiti minimi brevis | extensor digiti minimi | anterior surface of lateral epicondyle of humerus (common extensor tendon) |
| extensor carpi ulnaris | अंतर्मणिबंध प्रसारिणी | lateral epicondyle of humerus (common extensor tendon), ulna | 5th metacarpal | ulnar artery | extends and adducts wrist | flexor carpi ulnaris | extensor carpi ulnaris |
| Mobile wad | Mobile wad | Mobile wad | Mobile wad | Mobile wad | Mobile wad | Mobile wad | |
| brachioradialis | प्रगंड बहिःप्रकोष्ठिका | lateral supracondylar ridge of humerus | radial styloid process (distal radius) | radial recurrent artery | radial nerve | flexes forearm, pronates forearm when supine, supinates forearm when prone | |
| extensor carpi radialis longus | दीर्घ बहिर्मणिबंध प्रसारिणी | 2nd metacarpal | radial artery | extends wrist joint, abducts hand at wrist | flexor carpi radialis | extensor carpi radialis longus | 2nd metacarpal |
| extensor carpi radialis brevis | लघु बहिर्मणिबंध प्रसारिणी | anterior surface of lateral epicondyle of humerus (common extensor tendon) | base of 3rd metacarpal | posterior interosseus nerve | extensor carpi radialis brevis | anterior surface of lateral epicondyle of humerus (common extensor tendon) | base of 3rd metacarpal |
DEEP
| Muscle | Origin | Insertion | Artery | Nerve | Action | Antagonist | |
|---|---|---|---|---|---|---|---|
| supinator | उत्ताननी | lateral epicondyle of humerus, supinator crest of ulna, radial collateral ligament, annular ligament | lateral proximal shaft of radius | radial recurrent artery | posterior interosseus nerve (C7, C8) | supinates forearm | pronator teres, pronator quadratus |
| extensor indicis | तर्जनी प्रसारिणी | ulna | index finger (extensor hood) | extends index finger, wrist | extensor indicis | ||
| Anatomical snuff box | Anatomical snuff box | Anatomical snuff box | Anatomical snuff box | Anatomical snuff box | Anatomical snuff box | Anatomical snuff box | |
| abductor pollicis longus | दीर्घ अंगुष्ठापवर्तनी | ulna | first metacarpal | posterior interosseous artery | posterior interosseous nerve (C7, C8) | abducts and extends thumb | adductor pollicis |
| extensor pollicis brevis | लघु अंगुष्ठ प्रसारिणी | radius, interosseous membrane of forearm | proximal phalanx of thumb | extends thumb at metacarpophalangeal joint | flexor pollicis longus, flexor pollicis brevis | extensor pollicis brevis | radius, interosseous membrane of forearm |
| extensor pollicis longus | दीर्घ अंगुष्ठ प्रसारिणी | ulna, interosseous membrane of forearm | distal phalanx of thumb | extends thumb (metacarpophalangeal and interphalangeal) | extensor pollicis longus | ulna, interosseous membrane of forearm | distal phalanx of thumb |
Discussion