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Supinator

Supinator. Origin: lateral epicondyle, supinator crest & fossa of ulna, radial collateral ligament, annular ligament Insertion: lateral side of proximal one-third of radius Innervation: deep radial nerve. Supinator. Supinator. Actions: Supination. Abductor Pollicis Longus. Origin:

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Supinator

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  1. Supinator • Origin: • lateral epicondyle, supinator crest & fossa of ulna, radial collateral ligament, annular ligament • Insertion: • lateral side of proximal one-third of radius • Innervation: • deep radial nerve

  2. Supinator

  3. Supinator • Actions: • Supination

  4. Abductor Pollicis Longus • Origin: • middle one-third posterior surface of radius, interosseus membrane, mid-portion of posterolateral ulna • Insertion: • radial side of the base of first metacarpal • Innervation: • deep radial nerve

  5. Abductor Pollicis Longus

  6. Abductor Pollicis Longus

  7. Abductor Pollicis Longus

  8. Abductor Pollicis Longus • Actions: • abduct thumb at carpometacarpal joint

  9. Extensor Pollicis Brevis • Origin: • interosseous membrane and distal posterior surface of radius • Insertion: • base of proximal phalanx of thumb • Innervation: • deep radial nerve

  10. Extensor Pollicis Brevis

  11. Extensor Pollicis Brevis

  12. Extensor Pollicis Brevis

  13. Extensor Pollicis Brevis • Actions: • extend thumb at MCP joint

  14. Abductor Pollicis Longus/ Extensor Pollicis Brevis

  15. Extensor Pollicis Longus • Origin: • interosseous membrane and middle posterolateral surface of ulna • Insertion: • base of distal phalanx of thumb • Innervation: • deep radial nerve

  16. Extensor Pollicis Longus

  17. Extensor Pollicis Longus

  18. Extensor Pollicis Longus

  19. Extensor Pollicis Longus

  20. Extensor Pollicis Longus • Actions: • extend thumb at IP joint

  21. Extensor Pollicis Longus-Extends IP & MCP Joints

  22. Extensor Pollicis Longus

  23. Anatomical Snuff Box

  24. Pronator Teres • Origin: • common flexor tendon and (deep or ulnar head) from medial side of coronoid process of ulna • Insertion: • middle of lateral side of radius • Innervation: • median nerve

  25. Pronator Teres

  26. Pronator Teres • Actions: • Pronation • Elbow flexion

  27. Pronator Teres-Elbow Flexion & Pronation

  28. Pronator Quadratus • Origin: • median side of anterior surface of distal one-fourth of ulna • Insertion: • distal one-fourth of radius anteriorly • Innervation: • median nerve via anterior interosseous nerve

  29. Pronator Quadratus

  30. Pronator Quadratus • Actions: • Pronation

  31. Flexor Carpi Ulnaris • Origin: • common flexor tendon & (ulnar head) from medial border of olecranon & upper 2/3 posterior border of ulna • Insertion: • pisiform, hook of hamate, and base of 5th metacarpal • Innervation: • ulnar nerve

  32. Flexor Carpi Ulnaris

  33. Flexor Carpi Ulnaris

  34. Flexor Carpi Ulnaris • Actions: • Wrist flexion • Ulnar deviation

  35. Flexor Carpi Ulnaris-Wrist Flexion & Ulnar Deviation

  36. Flexor Carpi Radialis • Origin: • common flexor tendon from medial epicondyle of humerus • Insertion: • base of second and third metacarpal • Innervation: • median nerve

  37. Flexor Carpi Radialis

  38. Flexor Carpi Radialis

  39. Flexor Carpi Radialis • Actions: • Wrist flexion • Radial deviation

  40. Flexor Carpi Radialis-Wrist Flexion & Radial Deviation

  41. FCU & FCR—radial/ulnar deviation

  42. FCU & FCR—wrist flexion

  43. Palmaris Longus • Origin: • common flexor tendon, from medial epicondyle of humerus • Insertion: • palmar aponeurosis • Innervation: • median nerve

  44. Palmaris Longus

  45. Palmaris Longus

  46. Palmaris Longus • Actions: • Wrist flexion

  47. Palmaris Longus-Wrist Flexion

  48. Palmaris Longus

  49. Flexor Digitorum Superficialis • Origin: • humeroulnar head: common flexor tendon, ulnar collateral ligament, med. coronoid; • radial head: mid 1/3 radius • Insertion: • shafts of middle phalanges 2-5 • Innervation: • median nerve

  50. Flexor Digitorum Superficialis

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