Forearm, Wrist, and Hand Flashcards Preview

631: Clinical Management of the Musculoskeletal System I > Forearm, Wrist, and Hand > Flashcards

Flashcards in Forearm, Wrist, and Hand Deck (49):
1

The hand accounts for about __% of UE function

90%

2

What is the capsular pattern of the distal radioulnar joint?

pain at extremes of pronation/supination

3

What is the resting position of the distal radioulnar joint?

10 degrees of supination

4

What is the closed packed position of the distal radioulnar joint?

5 degrees of supination

5

Where is the Triangular Fibrocartilage Complex (TFCC) found?

between medial proximal row of carpal bones and distal ulna

6

What are the functions of the TFCC?

- Enhance joint congruity between the ulna and carpal bones
- Cushion against compressive forces

7

What are the 4 ligaments that originate from the TFCC?

- Ulnolunate ligament
- Ulnotriquetral ligament
- Ulnar collateral ligament
- Radioulnar ligament

8

What are the 2 structures that support the TFCC?

- Ulnocarpal ligaments
- Sheath of the extensor carpi ulnaris tendon

9

Which carpals articulate with the TFCC?

lunate and triquetrum

10

What is the capsular pattern of the radiocarpal joint?

Flexion and Extension equally limited

11

What is the resting position of the radiocarpal joint?

Neutral with slight ulnar deviation

12

What is the closed packed position of the radiocarpal joint?

Extension with radial deviation

13

Which carpal bone is most susceptible to injury during a fall onto an outstretched hand?

scaphoid

14

What is the capsular pattern of the intercarpal joints?

No recognized capsular pattern for the intercarpal joints

15

What is the resting position of the intercarpal joints?

Neutral or slight flexion

16

What is the closed packed position of the intercarpal joints?

Extension

17

Approximately 50% of the total arc of wrist flexion and extension occur at what level?

the Midcarpal level

18

What is the capsular pattern of the midcarpal joints?

Equal limitation of Flexion/Extension

19

What is the resting position of the midcarpal joints?

Neutral or slight flexion with ulnar deviation

20

What is the closed packed position of the midcarpal joints?

Extension with ulnar deviation

21

What is the capsular pattern of the first CMC joint?

Thumb abduction > thumb extension

22

What is the resting position of the first CMC joint?

Midway between abduction and adduction, and flexion and extension

23

What is the closed packed position of the first CMC joint?

Full opposition

24

What is the capsular pattern of CMC joints 2-5?

Equal limitation in all directions

25

What is the resting position of CMC joints 2-5?

Midway between flexion and extension

26

What is the closed packed position of CMC joints 2-5?

Full flexion

27

What is the capsular pattern of the interphalangeal joints?

Flexion, then extension

28

What is the resting position of the interphalangeal joints?

Slight flexion

29

What is the closed packed position of the interphalangeal joints?

Full extension

30

What is the capsular pattern of the MCP joints?

Flexion, then extension

31

What is the resting position of the MCP joints?

Slight flexion

32

What is the closed packed position of the MCP joints?

Full opposition

33

What is the function of the extrinsic (radiocarpal/ulnocarpal) carpal ligaments?

provide the majority of wrist stability

34

What is the function of the intrinsic (midcarpal) carpal ligaments?

serve as rotational restraints, binding the proximal row into a unit of rotational stability

35

What is the antebrachial fascia?

A dense connective tissue that encases the forearm and maintains the relationship of the tendons that cross the wrist

36

What does the extensor retinaculum do?

Serves to prevent the tendons from bowstringing when the tendons turn a corner at the wrist

37

What is the flexor retinaculum aka?

transverse carpal ligament

38

The flexor retinaculum transforms the carpal arch into what?

the carpal tunnel

39

What are the functions of the flexor retinaculum?

- Serves as an attachment site for the thenar and hypothenar muscles
- Helps maintain the transverse carpal arch
- Acts as a restraint against bowstringing of the extrinsic flexor tendons
- Protects the median nerve

40

What 2 structures restrain the flexor tendons to the metacarpals and phalanges ?

Annular and cruciate pulleys

41

What are the 3 arches of the hand?

- transverse
- longitudinal
- oblique

42

Dorsal interossei muscles ____duct the fingers.
Palmar interossei muscles ____duct the fingers.

abduct

adduct

43

What motion do the lumbricals perform?

“Lumberjacks eat Big Macs”

44

What are 6 types of functional hand tests?

- Hand Disability Index
- Minnesota Rate of Manipulation Test
- Jebsen-Taylor Hand-Function Test
- Nine-Hole Peg Test
- Purdue Pegboard Test
- Crawford Small Parts Dexterity Test

45

Ape hand deformity is indicative of what type of nerve palsy?

median nerve

46

Bishop's hand deformity is indicative of what type of nerve palsy?

Ulnar Nerve

47

Drop-wrist deformity is indicative of what type of nerve palsy?

radial nerve

48

claw finger deformity is indicative of what type of nerve palsy?

Median Nerve and Ulnar Nerve palsy

49

What is Dupuytren’s Contracture?

A fixed flexion contracture of the hand due to a palmar fibromatosis