hand

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Author:
jpowell22
ID:
152222
Filename:
hand
Updated:
2012-05-04 21:52:42
Tags:
functional anatomy
Folders:

Description:
wrist/hand
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  1. What are the articular surfaces of the carpometacarpal of the thumb?
    trapezium with 1st metacarpal
  2. What is the joint classification of the CMC, and what motions are available?
    modified biaxial, saddle

    • flex/ext (frontal plane; parallel to palm)
    • abd/add (sagittal plane; perpendicular to palm)
    • opposition/reposition (combo of flex, abd, rotation)
    • small amt of rotation
  3. What are the articulations of the metacarpophalangeal jt of the thumb?
    1st metacarpal with proximal phalanx
  4. What type of joint is the MCP of the thumb, and what mvmts are available?
    • uniaxial hinge
    • flex/ext
  5. What are the articulations of the interphalangeal joint of the thumb?
    proximal phalanx with distal phalax
  6. What type of joint is the IP of the thumb, and what motions are available?
    • uniaxial hinge joint
    • flex/ext
  7. What are the articulations of the carpometacarpal joint of the 2nd digit?
    metacarpal with trapezoid
  8. What are the articulations of the carpometacarpal joint of the 3rd digit?
    metacarpal with capitate
  9. What are the articulations of the carpometacarpal joint of the 4th digit?
    hamate
  10. What are the articulations of the carpometacarpal joint of the 5th digit?
    metacarpal with hamate

    most mobile out of digits 2-5
  11. What type of joint are the carpometacarpal jts of the digits, and what motion do you get?
    • nonaxial, irregular
    • gliding

    more stability than mobility
  12. What are the articulations of the metacarpophalangeal jts of the digits?
    • knuckles
    • metacarpal with proximal phalanx
  13. What type of joint are the MCP joints of the digits, and what type of mvmt do you get?
    condyloid, biaxial

    • flex/ext (sagittal plane)
    • abd/add (middle finger reference point and has no add.) (frontal plane)
    • circumduction
  14. Where are the interphalangeal joints f the digits located?
    • between phalanges
    • PIP, DIP
    • thumb only has one, digits have 2

    9 total in 1 hand, 18 in both
  15. What type of joint are the IP joints, and what types of mvmts occur?
    • uniaxial hinge
    • flex/ext
  16. The proximal end of the phalanges are called what?
    base
  17. The distal end of the phalanges are called what?
    head
  18. What does the flexor retinaculum ligament do?
    • holds flexor tendons to wrist
    • spans ant. (palmar) side of wrist
  19. What are the 2 divisions of the flexor retinaculum ligament?
    • transverse carpal ligament
    • palmar carpal ligament
  20. What is the transverse carpal ligament for?
    deeper, more distal

    arches over the carpal bones forming a tunnel for the median n....if this tunnel compresses, you will end up with carpal tunnel syndrome (CTS)
  21. What is the palmar carpal ligament for?
    more proximal and superficial on ant. surface

    prevents bow stringing of the flexor tendons (keeps them together)
  22. What ligament holds the extensor tendons to the posterior surface of the wrist?
    extensor retinaculum ligament
  23. What ligament is on the posterior side of the hand and goes from the proximal phalanx to the base of the distal phalanx (an aponeurosis)?
    extensor expansion ligament
  24. What is the eminence on the meaty part of the palm by the thumb (palmar side)?
    thenar

    atrophies with carpal tunnel
  25. What is the eminence on the meaty part of the palm by the pinky (palmar side)?
    hypothenar
  26. How do you find your anatomical snuffbox?
    abduct and hyperextend thumb
  27. What is the functional position (optimal strength and precision) of the hand?
    • slight wrist extension
    • MCPs and DIPs are slightly flexed
    • thumb opposed

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