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Flashcards in Joints Of The Hand Deck (50):
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radiocarpal joint type

condyloid synovial

1

radiocarpal joint articulation

distal end of radius and articular disc with proximal row of carpal bones (except pisiform)

2

radiocarpal joint joint capsule

fibrous layer of joint capsule surrounds joint and attaches to distal ends of radius and ulna and proximal row of carpal bones
lined by synovial membrane

3

radiocarpal joint ligaments

anterior and posterior ligaments strengthen fibrous capsule
ulnar collateral ligament attaches to styloid process of ulna and triquetram
radial collateral ligament attaches to styloid process of radius and scaphoid

4

radiocarpal joint movements

flexion/ extension
abduction/adduction
circumduction

5

nerve supply of radiocarpal joint

anterior interosseous branch of median nerve
posterior interosseous branch of radial nerve
dorsal and deep branches of ulnar nerve

6

carpal (intercarpal) joint type

plane synovial joint

7

carpal (intercarpal)joint articulation

between carpal bones of proximal row; joints between carpal bones of distal row
midcarpal joint: synovial joint between proximal and distal rows of carpal bones
pisiform joint:synovial joint between pisiform and triquetram

8

carpal (intercarpal) joint joint capsule

fibrous layer of joint capsule surrounds joints
lined by synovial membrane
pisiform joint is separate from other carpal joints

9

carpal joint ligaments

carpal bones united by anterior, posterior, and interosseous ligaments

10

carpal joint movements

small amount of gliding movement possible
flexion and abduction of hand occur at midcarpal joint

11

carpal joint nerve supply

anterior interosseous branch of median nerve
posterior interosseous branch of radial nerve
dorsal and deep branches of ulnar nerve

12

carpometacarpal(CMC) and intermetacarpal (IM) joint type

plane synovial joints
except for CMC joint of thumb: saddle synovial joint

13

carpometacarpal and intermetacarpal joint articulation

carpals and metacarpals with each other
CMC joint of thumb between trapezium and base of 1st metacarpal

14

carpometacarpal and intermetacarpal joint capsule

fibrous layer of joint capsule surrounds joints
lined on internal surface by synovial membrane

15

carpometacarpal and intermetacarpal joints ligaments

bones united by anterior, posterior, and interosseous ligaments

16

carpometacarpal and intermetacarpal joint movements

flexion extension and abduction adduction of CMC joint of 1st digit
almost no movement of 2nd and 3rd digits
4th digit slightly mobile
5th digit very mobile

17

carpometacarpal and intermetacarpal joint nerve supply

anterior interosseous branch of median nerve
posterior interosseous branch of radial nerve
dorsal and deep branches of ulnar nerve

18

limiting structures of flexion at wrist

ligaments: posterior radiocarpal and posterior part of joint capsule

19

structures limiting extension at wrist

ligaments:anterior radiocarpal and anterior part of joint capsule
bony apposition between radius and carpal bones

20

structures limiting abduction at wrist

ligaments: ulnar collateral ligament and medialpart of joint capsule
bony apposition between styloid process of radius and scaphoid

21

structures limiting adduction at wrist

ligaments: radial collateral and lateral part of joint capsule

22

metacarpophalangeal joint type

condyloid synovial

23

metacarpophalangeal joint articulation

heads of metacarpals with base of proximal phalanges

24

metacarpophalangeal joint capsule

fibrous layer of joint capsule encloses each joint
lined on internal surface by synovial membrane

25

metacarpophalangeal joint ligaments

strong palmar ligaments attached to phalanges and metacarpals
deep transverse metacarpal ligaments unite 2nd to 5th joints holding heads of metacarpals together
collateral ligaments pass from heads of metacarpals to bases of phalanges

26

metacarpophalangeal joint movements

flexion extension, abduction adduction, circumduction of 2nd to 5th digits
flexion extension of thumb occurs but abduction, adduction is limited

27

metacarpophalangeal joint nerve supply

digital nerves arising from ulnar and median nerves

28

interphalangeal (IP) joint type

hinge synovial joints

29

interphalangeal joint articulation

heads of phalanges with bases of more distally located phalanges

30

interphalangeal joint capsule

fibrous capsule encloses each joint
lined on internal surface by synovial membrane

31

interphalangeal joint ligaments

collateral ligaments pass from heads of proximmal to base of distal
strong palmar ligaments (plates)

32

interphalangeal joint movements

flexion extension

33

interphalangeal joint nerve supply

digital nerves arising from ulnar and median nerves

34

limiting structures of flexion at CMC of thumb

ligaments: posterior part of joint capsule
muscles: extensor and abductor pollicis brevis
apposition between thenar eminence and palm

35

limiting structures of flexion at MCP of digits 1-5

ligaments: collateral, posterior part of joint capsule
apposition between proximal phalanx and metacarpal

36

limiting structures of flexion of PIP digits 2-5

ligaments: collateral, posterior part of joint capsule
apposition between middle and proximal phalanges

37

limiting structures of flexion of DIP of digits 2-5

ligaments: collateral, oblique retinacular and posterior part of joint capsule

38

limiting structures of flexion of IP of thumb

ligaments:collateral and posterior part of joint capsule
apposition between distal and proximal phalanges

39

structures limiting extension of CMC of thymb

ligments: anterior part of joint capsule
muscles: 1st dorsal interosseous, flexor pollicis brevis

40

structures limiting extension of MCP of digits 1-5

ligaments: anterior part of joint capsule, palmar ligament

41

structures limiting extension at PIP and DIP of digits 2-5

ligaments: anterior part of joint capsule, palmar ligament

42

structures limiting extension at IP of thumb

ligaments: anterior part of joint capsule, palmar ligament

43

structures limiting abduction at CMC and MCP of thumb

muscles:1st dorsal interosseous, adductor pollicis
fascia and skin of 1st web space

44

structures limiting abduction at MCP of digits 2-5

ligaments: collateral
fascia and skin of web spaces

45

structures limiting adduction at CMC and MCP of thymb

apposition between thumb and index finger

46

structures limiting adduction at MCP of digits 2-5

apposition between adjacent digits

47

anterior dislocation of lunate:

fall on dorsiflexed wrist.lunate pushed out of place in floor of carpal tunnel toward palmar surface of wrist. can lead to carpal tunnel syndrome. because of poor blood supply, avascular necrosis

48

dejenerative joint disease of wrist

surgical fusion of carpals or arthrodesis may be necessary

49

fracture-separation of distal radial epiphysis

common in children because of frequent falls where force transmitted from hand to radius
in lateral radiograph of wrist, dorsal displacement obvious
displaces epiphyseal plate could be mistaken for fracture and separation could be misinterpretated as displaced piece of fractured bone
knowledge of age and growth plate impt