Hand and Wrist Anatomy Flashcards Preview

Jason's GI Block > Hand and Wrist Anatomy > Flashcards

Flashcards in Hand and Wrist Anatomy Deck (26):
1

pisiform is a sesamoid bone in which tendon?

flexor carpi ulnaris

2

Sesamoid bones in the thumb act as what?

tunnel

3

what is the key articular bone in the wrist?

radius

4

3 parts of the scaphoid, where is it most likely fractured?

articular
waist (common fracture)
tubercle

5

what is the purpose of the retinaculum?

retains tendons to prevent bridging

6

what tendon in the wrist is not held under the retinaculum?

palmaris longus

7

the anatomical snuff box, what is proximal? what is the floor?

proximal: radioal styloid
floor: scaphoid

8

When do carpal bones start to ossify?

age 2

9

which bones ossify first? small or large?

large ones like the capitate

10

2 joints of the wrist?

radio carpal
intercarpal condylar

11

What are the biaxial movements?

flex/ect
rad/uln deviation

12

rotation at wrist?

Nope

13

where is the synovial ellipsoid joint?

radiocarpal joint

14

Why is radial deviation less than ulnar deviation?

radial deviation is blocked by radial styloid process?

15

Why is flexion more than extension?

blocked by distal radius

16

what's the only tendon that attaches to carpal bones?

flexor carpi ulnaris

17

what is the most commonly subluxed carpal?

lunate

18

consequence of scaphoid fracture?

avascular necrosis due to fracture at waist and lack of blood supply

19

colles fracture?

fracture at distal radial head making dinner fork deformity

20

what kind of joint is the carpometacarpal joint of the thumb? what does it allow?

saddle joint
allows opposition

21

what are the movements allowed in the interphalangeal joints?

flex and ext only

22

movements allowed in metacarpophalangeal joints?

flex/ext
abd/add

23

what is the deep transverse metacarpal ligaments? where does it not attach?

limits finger abduction
doesn't attach to thumb

24

What is the volar and dorsal plate?

fibrocartilaginous plate to expand surface area for articulation

25

Collateral ligaments of phalanges are taut when?

in flexion

26

What is damaged in:
swan neck
boutonniere

Swan neck: volar plate
boutonniere: dorsal plate