Wrist-Hand kines - Sheet1

Question 1

collateral ligaments at finger MP joints

Answer 1

limits ab/adduction when taut; slack in extension; taut in flexion; more ulnar deviation allowed than radial deviation;

Question 2

accessory collateral ligaments of PIP and DIP joints

Answer 2

act like volar plate (slack in flexion)

Question 3

collateral ligaments of DIP and PIP joints

Answer 3

always taut; don’t allow radial or ulnar deviation at distal finger joints

Question 4

ORL

Answer 4

coordinates PIP and DIP extension; couples flexion but they can be separated; volar to PIP axis of motion dorsal to DIP; inserts into terminal tendon

Question 5

radioulnar ligaments

Answer 5

limit both pronation and supination

Question 6

oblique cord

Answer 6

proximal radius and ulna; transfers load from radius to ulna

Question 7

quadrate ligament

Answer 7

reinforces inferior portion of elbow joint; restricts supination and pronation

Question 8

articular surface shapes

Answer 8

metacarpals convex both ends; phalanges concave proximal convex distal

Question 9

V-ligament

Answer 9

scaphoid-capitate-triquetrum on palmar side

Question 10

TFCC contents

Answer 10

articular disc; ECU sheath; ulnar ligament complex; function is to stabilize DRUJ and cushion load bearing between carpals (lunate and triquetrum) and ulna

Question 11

closed packed position of wrist

Answer 11

full extension

Question 12

normal wrist extension

Answer 12

60-75 deg

Question 13

normal wrist flexion

Answer 13

70-85 deg

Question 14

normal ulnar deviation

Answer 14

35-40 deg

Question 15

normal radial deviation

Answer 15

15-20 deg

Question 16

swan neck deformity

Answer 16

MP flexion; PIP hyperextension; DIP flexion; short overused interossei and lax volar plate at PIP

Question 17

mallet finger

Answer 17

rupture of terminal tendon; loss of active DIP extension; extensor mechanism may retract creating secondary swan neck deformity if volar plate is lax

Question 18

boutonniere deformity

Answer 18

central slip ruptured increasing tension on terminal tendon leading to DIP hyperextension; subluxed lateral band causes PIP flexion

Question 19

scaphoid movement during flexion and radial dev

Answer 19

volarflex

Question 20

scaphoid and lunate movement during extension and ulnar deviation

Answer 20

dorsiflex

Question 21

positive ulnar variance

Answer 21

ulna longer; leads to increased load bearing on ulna (happens to some extent during pronation because of screw home mechanism at elbow)

Question 22

DISI

Answer 22

lunate fixed in dorsiflexed position (concavity facing more dorsal); limited ROM into flexion and radial deviation; caused by injury to SL ligament

Question 23

VISI

Answer 23

opposite DISI; injury to LT ligament

Question 24

functional wrist ROM

Answer 24

40 deg flexion and extension; 10 deg RD; 30 deg UD

Question 25

length test for ECRL

Answer 25

pronation; extend elbow; flex wrist

Question 26

main radial deviator

Answer 26

ECRL