Starred Lecture Items L13

Question 1

how can you differentiate between claw hand and hand of benediction

Answer 1

benediction: try to make a fist and they extend actively
claw: resting position, passive position

Question 2

what nerves are involved:
wrist drop
claw hand
hand of benediction

Answer 2

DR. CUMA
drop=radial
claw=ulnar
ape/hand of benediction= median

Question 3

recovery of proximal vs distal peripheral nerve damage

Answer 3

proximal will take longer to heal

Question 4

dorsal compartment 1 muscles

Answer 4

EPB, APL; thumb extension, flexion, and abduction lost= dequervain’s syndrome

Question 5

dorsal compartment 2 muscles

Answer 5

ECRB, ECRL

Question 6

dorsal compartment 3 muscles

Answer 6

EPL, goes around listers tubercle, epl rupture= cant straighten thumb

Question 7

dorsal compartment 4 muscles

Answer 7

ED, EI; rupture=lose ability to straighten finger?????

Question 8

dorsal compartment 5 muscles

Answer 8

EDM

Question 9

dorsal compartment 6 muscles

Answer 9

ECU; popping /snapping when turning wrist

Question 10

extensor hood central tendon fxn

Answer 10

extend PIP joint

Question 11

extensor hood lateral band fxn

Answer 11

extend DIP joint

Question 12

extensor hood oblique retinacular ligament fxn

Answer 12

PIP extension elongates the ORL while passively extending DIP
DIP flexion elongates ORL while passively flexing PIP

Question 13

extensor hood terminal tendon fxn

Answer 13

extends DIP joint

Question 14

difference between contracture vs lag

Answer 14

contracture: cannot be straightened
lag: cannot be actively lifted but can be passively straightened

Question 15

swan neck deformity and cause

Answer 15

PIP joint hyperextension and DIP joint flexion
cause: damage to terminal tendon/ direct blow to DIP joint while digit is extended, progressive weakening of DIP joint (RA)

Question 16

boutonniere deformity and cause

Answer 16

PIP joint flexion and DIP joint hyperextension
cause: direct injury to volar PIP/ secondary to RA

Question 17

A2 pulley located…

Answer 17

near MCP joint

Question 18

A4 pulley located near….

Answer 18

near PIP joint

Question 19

pulley most affected by trigger finger

Answer 19

A1

Question 20

causes of trigger finger