Joints Of The Hand

Question 0

radiocarpal joint articulation

Answer 0

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

Question 1

radiocarpal joint type

Answer 1

condyloid synovial

Question 2

radiocarpal joint joint capsule

Answer 2

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

Question 3

radiocarpal joint ligaments

Answer 3

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

Question 4

radiocarpal joint movements

Answer 4

flexion/ extension
abduction/adduction
circumduction

Question 5

nerve supply of radiocarpal joint

Answer 5

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

Question 6

carpal (intercarpal) joint type

Answer 6

plane synovial joint

Question 7

carpal (intercarpal)joint articulation

Answer 7

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

Question 8

carpal (intercarpal) joint joint capsule

Answer 8

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

Question 9

carpal joint ligaments

Answer 9

carpal bones united by anterior, posterior, and interosseous ligaments

Question 10

carpal joint movements

Answer 10

small amount of gliding movement possible

flexion and abduction of hand occur at midcarpal joint

Question 11

carpal joint nerve supply

Answer 11

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

Question 12

carpometacarpal(CMC) and intermetacarpal (IM) joint type

Answer 12

plane synovial joints

except for CMC joint of thumb: saddle synovial joint

Question 13

carpometacarpal and intermetacarpal joint articulation

Answer 13

carpals and metacarpals with each other

CMC joint of thumb between trapezium and base of 1st metacarpal

Question 14

carpometacarpal and intermetacarpal joint capsule

Answer 14

fibrous layer of joint capsule surrounds joints

lined on internal surface by synovial membrane

Question 15

carpometacarpal and intermetacarpal joints ligaments

Answer 15

bones united by anterior, posterior, and interosseous ligaments

Question 16

carpometacarpal and intermetacarpal joint movements

Answer 16

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

Question 17

carpometacarpal and intermetacarpal joint nerve supply

Answer 17

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

Question 18

limiting structures of flexion at wrist

Answer 18

ligaments: posterior radiocarpal and posterior part of joint capsule

Question 19

structures limiting extension at wrist

Answer 19

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

Question 20

structures limiting abduction at wrist

Answer 20

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

Question 21

structures limiting adduction at wrist

Answer 21

ligaments: radial collateral and lateral part of joint capsule

Question 22

metacarpophalangeal joint type

Answer 22

condyloid synovial

Question 23

metacarpophalangeal joint articulation

Answer 23

heads of metacarpals with base of proximal phalanges

Question 24

metacarpophalangeal joint capsule

Answer 24

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

Question 25

metacarpophalangeal joint ligaments

Answer 25

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

Question 26

metacarpophalangeal joint movements

Answer 26

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

Question 27

metacarpophalangeal joint nerve supply

Answer 27

digital nerves arising from ulnar and median nerves

Question 28

interphalangeal (IP) joint type

Answer 28

hinge synovial joints

Question 29

interphalangeal joint articulation

Answer 29

heads of phalanges with bases of more distally located phalanges

Question 30

interphalangeal joint capsule

Answer 30

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

Question 31

interphalangeal joint ligaments

Answer 31

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

Question 32

interphalangeal joint movements

Answer 32

flexion extension

Question 33

interphalangeal joint nerve supply

Answer 33

digital nerves arising from ulnar and median nerves

Question 34

limiting structures of flexion at CMC of thumb

Answer 34

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

Question 35

limiting structures of flexion at MCP of digits 1-5

Answer 35

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

Question 36

limiting structures of flexion of PIP digits 2-5

Answer 36

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

Question 37

limiting structures of flexion of DIP of digits 2-5

Answer 37

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

Question 38

limiting structures of flexion of IP of thumb

Answer 38

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

Question 39

structures limiting extension of CMC of thymb

Answer 39

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

Question 40

structures limiting extension of MCP of digits 1-5

Answer 40

ligaments: anterior part of joint capsule, palmar ligament

Question 41

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

Answer 41

ligaments: anterior part of joint capsule, palmar ligament

Question 42

structures limiting extension at IP of thumb

Answer 42

ligaments: anterior part of joint capsule, palmar ligament

Question 43

structures limiting abduction at CMC and MCP of thumb

Answer 43

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

Question 44

structures limiting abduction at MCP of digits 2-5

Answer 44

ligaments: collateral | fascia and skin of web spaces

Question 45

structures limiting adduction at CMC and MCP of thymb

Answer 45

apposition between thumb and index finger

Question 46

structures limiting adduction at MCP of digits 2-5

Answer 46

apposition between adjacent digits

Question 47

anterior dislocation of lunate:

Answer 47

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

Question 48

dejenerative joint disease of wrist

Answer 48

surgical fusion of carpals or arthrodesis may be necessary

Question 49

fracture-separation of distal radial epiphysis

Answer 49

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