Chapter 7 Elbow, Wrist, Hand Flashcards Preview

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Flashcards in Chapter 7 Elbow, Wrist, Hand Deck (22):
1

Only muscle of thenar eminence NOT innervated by median n?

Adductor pollicis brevis (ulnar n)

2

Innervation of lumbricals?

1st-2nd innervated by median n; 3rd-4th innervated by ulnar n

3

What attaches to the DIPs?

Flexor digitorum profundus

4

What attaches to PIPs?

Flexor digitorum superficialis

5

Carrying angle?

Intersection of 1) longitudinal axis of humerus and 2) line from distal radial-ulnar joint passing thru proximal radial-ulnar joint

6

CA for men?

5 degrees

7

CA for women?

10-12 degrees

8

CA >15 degrees?

Cubitus valgus OR abducation of ulna in SD

9

CA <3 degrees?

Cubitus varus OR adduction of ulna in SD

10

An increase in CA causes what wrist motion?

Adduction of wrist

11

A decreased in CA causes what wrist motion?

Abduction of wrist

12

What motions occur with adduction of ulna?

Lateral glide of olecranon, radius is pulled proximally resulting in abduction of wrist

13

What motions occur with abduction of ulna?

Medial glide of olecranon, radius is pushed distally resulting in adduction of wrist

14

Radial head motion?

Anterior with supination; posterior with pronation

15

Location of reference when naming ulna motion?

Distal ulna

16

Common cause of posterior radial head?

Falling on pronated forearm

17

Common cause of anterior radial head?

Falling backward on supinated forearm

18

Gold standard dx for carpul tunnel?

EMG

19

Swan neck deformity?

Flexion contracture of MCP and DIP, extension contracture of PIP

20

Boutonniere deformity?

Extension contracture of MCP and DIP, flexion contracture of PIP

21

Cause of swan neck?

Contracture of intrinsic mm of hand

22

Cause of boutonniere?

Rupture of hood o extensor tendon at PIP