Hand anatomy

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Author:
elementsninja
ID:
292710
Filename:
Hand anatomy
Updated:
2015-01-08 22:01:44
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Hand anatomy
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Hand anatomy
Description:
Hand anatomy
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  1. What is the Fibrous band that spans the anterior wrist?
    Flexor retinaculum
  2. What makes up the flexor retinaculum?
    • palmar carpal ligament
    • transverse carpal ligament (carpal tunnel syndrome)
  3. What does the Extensor Retinaculum Ligament do?
    Holds extensor tendons close to wrist.
  4. What are extrinsic and  intrinsic muscles?
    origin of extrinsics attach proximal of wrist.

    origins intrinsics proximal attachment at or distal to the carpals.
  5. Extrinsic muscles (anterior)
    • • Flexor digitorumsuperficialis
    • • Flexor digitorumprofundus
    • • Flexor pollicislongus
  6. Extrinsic muscles (posterior)
    • • Extensor digitorum
    • • Extensor digiti minimi
    • • Extensor indicis
    • • Abductor pollicis longus
    • • Extensor pollicis longus
    • • Extensor pollicis brevis
  7. Intrinsic muscle groups
    • •Thenar
    • •Hypothenar
    • •Deep Palm
  8. Thenar muscles
    • • Flexor pollicis brevis
    • • Abductor pollicis brevis
    • • Opponens pollicis
  9. hypothenar muscles
    • • Flexor digiti minimi
    • • Abductor digiti minimi
    • • Opponens digiti minimi
  10. Deep palm muscles
    • • Adductor pollicis
    • • Interossei
    • • Lumbricales
  11. Name the joints of the hand
    • •Carpometacarpal (CMC)
    • •Metacarpophalangeal (MCP)
    • •Proximal interphalangeal (PIP)
    • •Distal interphalangeal (DIP)
  12. Flexor Digitorum Superficialis
    A: MCP, PIP flexion

    Assist wrist flexion
  13. Flexor Digitorum Profundus
    A: MCP, PIP, DIP flexion, 2-5


    Deep to Flexor Digitorum Superficialis
  14. Extensor Digitorum
    A: MCP, PIP, DIP extension,2-5

    Superficial
  15. Extensor Indicis
    A: MCP, PIP, DIP extension,2nd finger

    Deep
  16. Extensor Digiti Minimi
    A:MCP, PIP, DIPextension,5th finger

    Long narrow muscle, deep to extensor digitorumand extensor carpi ulnaris, Becomes superficial before crossing wrist
  17. What is medical term for thumb?
    Pollicis
  18. Extrinsic thumb muscles include:
    • • Flexor pollicis longus
    • • Abductor pollicis longus
    • • Extensor pollicis longus
    • • Extensor pollicis brevis
  19. Flexor Pollicis Longus
    A: Thumb CMC, MCP & IP flexion

    Deep muscle
  20. Abductor Pollicis Longus
    A:  Thumb abduction

    Deep on the posterior forearm muscle
  21. Extensor Pollicis Brevis
    A: Thumb CMC & MCP extension
  22. Extensor Pollicis Longus
    A:  Thumb CMC, MCP, IP extension
  23. What is this?
    •Depression formed with extension of thumb •Three muscle tendons
    •Abductor pollicislongus
    •Extensor pollicisbrevis
    •Extensor pollicislongus(medial)
    Anatomical Snuffbox

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