MSK Bones of the Hand and Carpal Tunnel Flashcards Preview

ESA 2 > MSK Bones of the Hand and Carpal Tunnel > Flashcards

Flashcards in MSK Bones of the Hand and Carpal Tunnel Deck (18):
1

Give the names of the distal carpals in the lateral to medial direction (4)

- Trapesium

- Trapezoid

- Capitate

- Hamate

* THAT THEY CAN'T HANDLE*

2

In what direction does the numbering of the metacarpals run?

Lateral to medial I.e. Thumb = 1, pinky = 5

3

Give the three areas of phalanges

- Proximal
- Middle
- Distal

4

What is a Bennet's fracture?

Fracture of the first metacarpal base due to hyperabduction of the thumb

5

What is a Boxer's fracture?

Fracture of the fifth metacarpal neck, usually due to hitting a hard object

6

Give the names of the proximal carpals in the lateral to medial direction (4)

- Scaphoid

- Lunate

- Triquetrum

- Pisiform

*SCARED LOVERS TRY POSITIONS*

7

What is the anatomical snuffbox/radial fossa?

A triangular depression found on the lateral aspect of the dorsum of the hand

8

What are the borders of the anatomical snuffbox? (5)

- Ulnar/medial border = Tendon of the extensor pollicis longus
- Radial/lateral border = Tendons of the abductor pollicis longus and extensor pollicis brevis
- Proximal border = Styloid process of the radius
- Floor = Scaphoid and trapezium
- Roof = Skin

9

What does the anatomical snuffbox contain?

- Radial artery
- Radial nerve
- Cephalic vein

10

How is the anatomical snuffbox clinically relevant?

- Can palpate radial artery

- Localised pain in the AS is most likely a scaphoid fracture. This fracture can rupture the proximal area of the scaphoid's blood supply which can lead to avascular necrosis and future arthritis

11

What is the anatomical snuffbox/radial fossa?

A triangular depression found on the lateral aspect of the dorsum of the hand

12

What are the borders of the anatomical snuffbox? (5)

- Ulnar/medial border = Tendon of the extensor pollicis longus
- Radial/lateral border = Tendons of the abductor pollicis longus and extensor pollicis brevis
- Proximal border = Styloid process of the radius
- Floor = Scaphoid and trapezium
- Roof = Skin

13

What does the anatomical snuffbox contain?

- Radial artery
- Radial nerve
- Cephalic vein

14

How is the anatomical snuffbox clinically relevant?

- Can palpate radial artery

- Localised pain in the AS is most likely a scaphoid fracture. This fracture can rupture the proximal area of the scaphoid's blood supply which can lead to avascular necrosis and future arthritis

15

What forms the carpal tunnel?

- Laterally = Scaphoid and Trapezium tubercules
- Medially = Hook of Hamate and Pisiform
(Carpal Arch = deep)

- Flexor Retinaculum
(Originates on lateral side and inserts on medial side of carpal arch = superficial)

16

What does the carpal tunnel contain? (4)

- Tendon of flexor pollicis longus

- Median nerve

- Flexor digitorum superficialis tendons (4)

- Flexor digitorum profundus tendons (4)

17

What is carpal tunnel syndrome? How does it present?

- Compression of the median nerve

- 'Pins and needles' sensation in digits 2 - half of 4 and weakness of thenar muscles

18

What is the cause of carpal tunnel syndrome?

Unknown cause but could be due to arthritic changes in carpal bones/thickening of tendons

Decks in ESA 2 Class (63):